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8922d7adf20e7c80781f781aecdda8e0d2aafdfe | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | Is Archaea a prokaryote or a eukaryote? | {
"text": [
"prokaryotes"
],
"answer_start": [
93
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
518e86a8683e0081fa66fa897a00787591707e51 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | Bacteria are not | {
"text": [
"plants"
],
"answer_start": [
17
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
ab9e00b5f6d681779752ec09ddbdee086feecef0 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | If a prokaryote isn't a bacteria, what would it be? | {
"text": [
"Archaea"
],
"answer_start": [
541
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
0974a5023ae6d4d0ca4065478d2761aec71fe235 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | If a scientist looks at a cell and is unable to spot a nucleus under a microscope, what can they be certain the cell isn't? | {
"text": [
"animals and other eukaryotes"
],
"answer_start": [
122
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
4cf0758552ae1c3de3f8feeedd384f262d3964e3 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | Are archaea prokaryotes or eukaryotes? | {
"text": [
"prokaryotes"
],
"answer_start": [
93
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
6dd941b4ae4136032704c83d7218a77fb8f64305 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | Luca was the parent of all __ | {
"text": [
"prokaryotes"
],
"answer_start": [
382
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
b558bb138056f4edb91005c04a4e615c2c936275 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | Bacteria were erroneously thought of as? | {
"text": [
"plants"
],
"answer_start": [
17
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
f12fc1016ecb93b96e3b77d5e8acb30b051556c3 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | What is one common cell characteristic that you would never find inside bacteria? | {
"text": [
"nucleus"
],
"answer_start": [
185
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
438402036957c00e0d05baab0c5bc1f870962b95 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | Is a nucleus found in a prokaryotic or eukaryotic cell? | {
"text": [
"eukaryotes"
],
"answer_start": [
140
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
72e212d6ace9d219c87ac606043f4c158b84b256 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | Horses are __ | {
"text": [
"eukaryotes"
],
"answer_start": [
140
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
a17ee3c72cea2181459f2bc65afeb0cb65123816 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | Bacteria are different from eukaryotes as they? | {
"text": [
"do not contain a nucleus and rarely harbour membrane-bound organelles"
],
"answer_start": [
168
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
04b9d2413373da756c25b801370580f28268bda3 | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | What category would a scientist have placed any bacterial strain under in the times when trees and ferns were in the same category? | {
"text": [
"Schizomycetes"
],
"answer_start": [
47
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
ed824e4aa254ade68589eb1efc9c4994c18597ae | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | How were bacteria initially classified? | {
"text": [
"Schizomycetes"
],
"answer_start": [
47
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
3f507a363d8f6fae29eb6c0434da777285a746ee | Bacteria | Once regarded as plants constituting the class Schizomycetes, bacteria are now classified as prokaryotes. Unlike cells of animals and other eukaryotes, bacterial cells do not contain a nucleus and rarely harbour membrane-bound organelles. Although the term bacteria traditionally included all prokaryotes, the scientific classification changed after the discovery in the 1990s that prokaryotes consist of two very different groups of organisms that evolved from an ancient common ancestor. These evolutionary domains are called Bacteria and Archaea. | What is usually not found in eukaryotic cells? | {
"text": [
"membrane-bound organelles"
],
"answer_start": [
212
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
c6dd6caad0b117b608506e93f4e2104b4e221d0c | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | What method is ineffective if one wants many samples? | {
"text": [
"Solid growth"
],
"answer_start": [
75
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
fb695747d381148a7d2466870e956a4e0f49085d | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | What can we do with liquid growth media that we cannot do with solid growth media? | {
"text": [
"measurement of growth or large volumes of cells"
],
"answer_start": [
216
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
f50f2dad4c466719d2ab6473a05b0110bd21aa34 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | What do agar plates contain as solid growth media? | {
"text": [
"agar"
],
"answer_start": [
103
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
1a3660060fc11d1445ade2fb5b4ae9a7423cda88 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | What kind of media is used to age bacteria? | {
"text": [
"solid or liquid"
],
"answer_start": [
52
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
933dfb6cc8674855a1edb196f4b401e7fd13e432 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | What media is used to grow a single bacteria? | {
"text": [
"solid"
],
"answer_start": [
52
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
034e1d868eb7632bbe1d69619b7fafd30debe63a | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | How is the media modified? | {
"text": [
"specific nutrients added or deficient, or with antibiotics added"
],
"answer_start": [
499
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
98f68be1ce3ae93311a449f7e536f104ef4cff43 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | What stop the growth of bacteria? | {
"text": [
"antibiotics"
],
"answer_start": [
546
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
773ca38df6f587c6af2402e271e57d20e37df6d6 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | What process is least accurate if you want the purest sample possible? | {
"text": [
"liquid growth"
],
"answer_start": [
182
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
5e5dd3c7114eb3675941e9b0de353ac4e6b7e072 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | Why is the liquid media stirred? | {
"text": [
"making the cultures easy to divide and transfer"
],
"answer_start": [
344
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
fa5a9391b675d182e3a9706d533b546692059598 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | What is the difference between solid and liquid media? | {
"text": [
"Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required"
],
"answer_start": [
75
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
5dd45550e06ef8f8780ffa6ecb20c771b05ed452 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | Why is liquid a good option for one who wants many samples? | {
"text": [
"Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer"
],
"answer_start": [
278
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
ed47a73bf3e8ecacf47ad4fa9e22642e33d30443 | Bacteria | In the laboratory, bacteria are usually grown using solid or liquid media. Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth media are used when measurement of growth or large volumes of cells are required. Growth in stirred liquid media occurs as an even cell suspension, making the cultures easy to divide and transfer, although isolating single bacteria from liquid media is difficult. The use of selective media (media with specific nutrients added or deficient, or with antibiotics added) can help identify specific organisms. | Why would it be hard to tell what kind of bacteria it is if you use the liquid method? | {
"text": [
"isolating single bacteria from liquid media is difficult"
],
"answer_start": [
402
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
fe003218b850164577ade20ea97044cfdd46e720 | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | Which one has nucleus, bacteria or Archaea? | {
"text": [
"Archaea"
],
"answer_start": [
748
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
3d242cde70527a33726db8517d4810e6a26e587f | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | What two bacteria have multiple membranes? | {
"text": [
"phylum Planctomycetes and candidate phylum Poribacteria"
],
"answer_start": [
275
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
eac6a3e4b513df67ceb953538c2193a63996785e | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | If something were to stop the bacteria from processing it's protein by connecting to the ribosomes, what would it be? | {
"text": [
"Some antibiotics"
],
"answer_start": [
882
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
2aa5ad1d0c4f84517447b74bedfa38f479cade4b | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | What are proteins made by? | {
"text": [
"ribosomes"
],
"answer_start": [
574
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
175f3549551d178a3dde1454a8ee0c2005a2ae20 | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | What is included in the chromosome? | {
"text": [
"its associated proteins and RNA"
],
"answer_start": [
238
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
f587d9506a652641fc1b080c371efe526a196c23 | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | Which one has nucleoid, Archaea or bacteria? | {
"text": [
"Bacteria"
],
"answer_start": [
0
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
3a9d9ed8c48ca6b83944017a8ae229bdafe51763 | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | If an antibiotic binds to the 70S ribosome, how does it help? | {
"text": [
"kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host"
],
"answer_start": [
993
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
342fb6cd3426bb2755ef668a665012dbecae4d4b | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | Which ribosomes did 30S and 50S subunits formed, 80S or 70S? | {
"text": [
"70S"
],
"answer_start": [
806
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
3d344001d1496cf23e1f32671d21b858c43ab4c4 | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | Which one has 80S ribosomes, phylum Planctomycetes, Archaea or phylum Poribacteria? | {
"text": [
"Archaea"
],
"answer_start": [
748
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
b0037bfd0aa2e9fe0ed2fc995207015c946cf37d | Bacteria | Bacteria do not have a membrane-bound nucleus, and their genetic material is typically a single circular DNA chromosome located in the cytoplasm in an irregularly shaped body called the nucleoid. The nucleoid contains the chromosome with its associated proteins and RNA. The phylum Planctomycetes and candidate phylum Poribacteria may be exceptions to the general absence of internal membranes in bacteria, because they appear to have a double membrane around their nucleoids and contain other membrane-bound cellular structures. Like all living organisms, bacteria contain ribosomes, often grouped in chains called polyribosomes, for the production of proteins, but the structure of the bacterial ribosome is different from that of eukaryotes and Archaea. Bacterial ribosomes have a sedimentation rate of 70S (measured in Svedberg units): their subunits have rates of 30S and 50S. Some antibiotics bind specifically to 70S ribosomes and inhibit bacterial protein synthesis. Those antibiotics kill bacteria without affecting the larger 80S ribosomes of eukaryotic cells and without harming the host. | Which one contains 80S ribosomes, bacteria or Archaea? | {
"text": [
"Archaea"
],
"answer_start": [
748
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
7a04e158711437a93e193fe8ef92e64bc84f89ca | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | In rare instances, which shapes may you find some bacteria to be? | {
"text": [
"tetrahedral or cuboidal shapes"
],
"answer_start": [
427
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
ff864d50d88d3574b8188159f0fda5b7e67dccfb | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | What is one feature of bacteria that is commonly observed in the ability to swim? | {
"text": [
"Elongation"
],
"answer_start": [
181
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
572d3f32417bee9621dbb922e5d80cb0d3f4d6fd | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | The bacteria that were found in an environment with minimal nutrients had which type of shape when cut at a right angle to an axis? | {
"text": [
"star"
],
"answer_start": [
577
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
43ea4305ccb6aace9b7be79cc74baa01f0622eff | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | Which of the following indicates a larger number of organisms, bacilli or bacillus? | {
"text": [
"bacilli"
],
"answer_start": [
128
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
50607dcaad2279f12811207b5047a7e337429d33 | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | Which shape is least well-suited to a low-nutrient environment, star or spiral? | {
"text": [
"spiral"
],
"answer_start": [
319
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
ca5b7729a62fdf77cad76acd78460a5a200dffd0 | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | Generally speaking, if a bacteria isn't shaped like a rod, what shape would it have? | {
"text": [
"spherical"
],
"answer_start": [
34
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
082ab6f7d93c59bdfb1c447c86b3c8ca1714b695 | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | The ability to swim in liquids is possible through which aspect of bacteria? | {
"text": [
"shapes"
],
"answer_start": [
751
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
9bbf16389a1458c09c769b4867da6ece889f6241 | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | What shape is rarest in surface baceteria? | {
"text": [
"star"
],
"answer_start": [
577
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
0cf5fa58f87d6aa808d882f59dba610f71064cdd | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | Which rod-shaped bacteria has a name that is not derived from the word stick? | {
"text": [
"vibrio"
],
"answer_start": [
243
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
f3a3d2ae416bf5f37bfd4f2e491917f15d30771b | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | If an organism lives in an environment with minimal nutrients or resources, it can be inferred it possess which kind of advantage? | {
"text": [
"large surface area to volume ratio"
],
"answer_start": [
608
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
a167188ce5e3d2e76c19654f30c29bfd473c9a92 | Bacteria | Most bacterial species are either spherical, called cocci (sing. coccus, from Greek kókkos, grain, seed), or rod-shaped, called bacilli (sing. bacillus, from Latin baculus, stick). Elongation is associated with swimming. Some bacteria, called vibrio, are shaped like slightly curved rods or comma-shaped; others can be spiral-shaped, called spirilla, or tightly coiled, called spirochaetes. A small number of species even have tetrahedral or cuboidal shapes. More recently, some bacteria were discovered deep under Earth's crust that grow as branching filamentous types with a star-shaped cross-section. The large surface area to volume ratio of this morphology may give these bacteria an advantage in nutrient-poor environments. This wide variety of shapes is determined by the bacterial cell wall and cytoskeleton, and is important because it can influence the ability of bacteria to acquire nutrients, attach to surfaces, swim through liquids and escape predators. | Of the rarest types of shapes for bacteria, which would likely be a much more rigid and stable shape in an environment? | {
"text": [
"tetrahedral"
],
"answer_start": [
427
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
beb58c2e813cd4a48468724ca5993d0cdbb3496b | Bacteria | Regardless of the type of metabolic process they employ, the majority of bacteria are able to take in raw materials only in the form of relatively small molecules, which enter the cell by diffusion or through molecular channels in cell membranes. The Planctomycetes are the exception (as they are in possessing membranes around their nuclear material). It has recently been shown that Gemmata obscuriglobus is able to take in large molecules via a process that in some ways resembles endocytosis, the process used by eukaryotic cells to engulf external items. | What might one find in brackish water? | {
"text": [
"Planctomycetes"
],
"answer_start": [
251
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
44724f9bfc3025e7bedc049fd42709398b95ad02 | Bacteria | Regardless of the type of metabolic process they employ, the majority of bacteria are able to take in raw materials only in the form of relatively small molecules, which enter the cell by diffusion or through molecular channels in cell membranes. The Planctomycetes are the exception (as they are in possessing membranes around their nuclear material). It has recently been shown that Gemmata obscuriglobus is able to take in large molecules via a process that in some ways resembles endocytosis, the process used by eukaryotic cells to engulf external items. | How do bacteria absorb items to feed so to speak? | {
"text": [
"by diffusion or through molecular channels in cell membranes"
],
"answer_start": [
185
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
13b9ca0a02be380efd41453cdfa368ced2958c13 | Bacteria | Regardless of the type of metabolic process they employ, the majority of bacteria are able to take in raw materials only in the form of relatively small molecules, which enter the cell by diffusion or through molecular channels in cell membranes. The Planctomycetes are the exception (as they are in possessing membranes around their nuclear material). It has recently been shown that Gemmata obscuriglobus is able to take in large molecules via a process that in some ways resembles endocytosis, the process used by eukaryotic cells to engulf external items. | What is the difference in the ability to take in raw materials? | {
"text": [
"The Planctomycetes are the exception (as they are in possessing membranes around their nuclear material)"
],
"answer_start": [
247
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
0ae2fe8dbd7243ecf06aabc961c1046748196491 | Bacteria | Regardless of the type of metabolic process they employ, the majority of bacteria are able to take in raw materials only in the form of relatively small molecules, which enter the cell by diffusion or through molecular channels in cell membranes. The Planctomycetes are the exception (as they are in possessing membranes around their nuclear material). It has recently been shown that Gemmata obscuriglobus is able to take in large molecules via a process that in some ways resembles endocytosis, the process used by eukaryotic cells to engulf external items. | Which bacteria absorbs materials in a different way from most? | {
"text": [
"Planctomycetes"
],
"answer_start": [
251
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
4e36c7d39595242534debfd83e269cf89bc3834d | Bacteria | Regardless of the type of metabolic process they employ, the majority of bacteria are able to take in raw materials only in the form of relatively small molecules, which enter the cell by diffusion or through molecular channels in cell membranes. The Planctomycetes are the exception (as they are in possessing membranes around their nuclear material). It has recently been shown that Gemmata obscuriglobus is able to take in large molecules via a process that in some ways resembles endocytosis, the process used by eukaryotic cells to engulf external items. | How could bacteria consume bigger particles? | {
"text": [
"via a process that in some ways resembles endocytosis"
],
"answer_start": [
442
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
28acd7002002ba7cc4ed45e4d5c68906390ec646 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | How was the tape in VHS tapes described? | {
"text": [
"thin and delicate"
],
"answer_start": [
791
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
d74adc9b910f85fccfa1d336fa913fc3d90fdbb6 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | What doesn;t a player need to touch a disc? | {
"text": [
"the discs were read optically instead of magnetically"
],
"answer_start": [
79
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
ad76ad8f8b48bad70d6a18bc46fcc871e167b452 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | How were VHS tapes read? | {
"text": [
"magnetically"
],
"answer_start": [
120
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
c1ec6dac30acccd02e7ca7392b4c1a0872b0dd74 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | Why don't LaserDiscs get progressive wear similar to VHS tapes? | {
"text": [
"no physical contact needs to be made between the player and the disc"
],
"answer_start": [
134
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
c381ac721c0bf31616e314736406f60107297fb8 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | What would ill-made VHS players do to tapes? | {
"text": [
"mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it"
],
"answer_start": [
906
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
00fcc95b2ddcf12abb3271e063da7c297893a225 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | What time frame could be touted for the longevity of LaserDiscs? | {
"text": [
"last beyond one's lifetime"
],
"answer_start": [
422
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
874a1680597b7001a28fee31bcf8fa4cb5b5d431 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | Why don't VHS tapes last as long as laserdiscs? | {
"text": [
"a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use"
],
"answer_start": [
463
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
07a2e215df8153f89620d4560ee0ddd29f78a6f6 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | What is the benefit of forgoing the magnet? | {
"text": [
"no physical contact needs to be made between the player and the disc"
],
"answer_start": [
134
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
cfb9dc868da7ca95e4cc73b130ba7fc124d4a622 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | How may a person damage a VHS tape? | {
"text": [
"creasing it, frilling (stretching) its edges, or even breaking it"
],
"answer_start": [
942
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
aacb02320fbaff677b97e3d85a4a5969fdbfdb88 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | Rather than allowing them to last "beyond one's lifetime", the mechanics of videocassettes instead did what? | {
"text": [
"causing progressive wear with each use"
],
"answer_start": [
616
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
59fb292167727728fde891ae2446b7085c1b3955 | LaserDisc | LaserDiscs potentially had a much longer lifespan than videocassettes. Because the discs were read optically instead of magnetically, no physical contact needs to be made between the player and the disc, except for the player's clamp that holds the disc at its center as it is spun and read. As a result, playback would not wear the information-bearing part of the discs, and properly manufactured LDs would theoretically last beyond one's lifetime. By contrast, a VHS tape held all of its picture and sound information on the tape in a magnetic coating which is in contact with the spinning heads on the head drum, causing progressive wear with each use (though later in VHS's lifespan, engineering improvements allowed tapes to be made and played back without contact). Also, the tape was thin and delicate, and it was easy for a player mechanism, especially on a low quality or malfunctioning model, to mishandle the tape and damage it by creasing it, frilling (stretching) its edges, or even breaking it. | Ultimately, what is the major benefit of having discs that read optically? | {
"text": [
"properly manufactured LDs would theoretically last beyond one's lifetime"
],
"answer_start": [
376
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
9cda2e44f8648a6bbfd934bd2e18417ccd4dbb01 | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | What decade is 1983 part of? | {
"text": [
"1980s"
],
"answer_start": [
189
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
0d95b032a8b4c4f9a99dffb2faa64735e4e7b781 | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | Who made Sega's Astron Belt? | {
"text": [
"Sega"
],
"answer_start": [
229
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
c47d005de48b7e8f36acc26865693323e72c831a | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | Of Halcyon and Space Ace, which was a game console? | {
"text": [
"Halcyon"
],
"answer_start": [
465
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
6c2508a6b72b4ac25539777cd0029207ecb9e251 | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | What were the consoles from American Laser Games and Cinematronics like? | {
"text": [
"elaborate"
],
"answer_start": [
297
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
c32e978d29193fdf7ca22d003e246fc8cf6baf85 | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | Who made the first laserdisc game? | {
"text": [
"Sega"
],
"answer_start": [
229
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
ad0db46f9eb7a9243b43c0df0f2d7601e68329c5 | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | Who made Pioneer's Laseractive? | {
"text": [
"Pioneer"
],
"answer_start": [
441
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
cef9ff59c078cf11c3eeba0798be256df2752aed | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | Of Dragon's Lair and Pioneer, which was an interactive movie? | {
"text": [
"Dragon's Lair"
],
"answer_start": [
397
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
d602596e53bfa8dce2daa25c00a2418fa1e78f1e | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | What was significant about the movie Dragon's Lair? | {
"text": [
"interactive"
],
"answer_start": [
370
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
dda21bfaf66baf9048361e0134cdc513f6b2b536 | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | What media format was Dragon's Lair? | {
"text": [
"LaserDisc"
],
"answer_start": [
527
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
1f1d4d8f4b07471fb39dddebc2f96d8427469771 | LaserDisc | The format's instant-access capability made it possible for a new breed of LaserDisc-based video arcade games and several companies saw potential in using LaserDiscs for video games in the 1980s and 1990s, beginning in 1983 with Sega's Astron Belt. American Laser Games and Cinematronics produced elaborate arcade consoles that used the random-access features to create interactive movies such as Dragon's Lair and Space Ace. Similarly, the Pioneer Laseractive and Halcyon were introduced as home video game consoles that used LaserDisc media for their software. | What is Dragon's Lair? | {
"text": [
"video game"
],
"answer_start": [
497
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
fd5378267ad9482348350ea5ab4b07fec81e7803 | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | What chemical process causes laser rot? | {
"text": [
"oxidize"
],
"answer_start": [
317
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
875efbea0bceccf035f5ce950f4a33bc10da1536 | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | What part of the laser disc was most likely to cause failure of the device? | {
"text": [
"adhesive"
],
"answer_start": [
71
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
e71f4c59cf3afd6b45e97f8f8dcfd46b775692c3 | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | "Color flash" was used by plants to refer to the oxidation of what part of the laser? | {
"text": [
"metalized reflective aluminium layer"
],
"answer_start": [
265
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
0cf4f805379faa6af54458d681e7cfd0a96181bc | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | Losing what physical property would render a LaserDisc unable to be played? | {
"text": [
"its reflective characteristics"
],
"answer_start": [
334
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
133f49d741b373c079fb4889cdfe3720240d647e | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | What part of the laser disc would show black spots of "laser rot"? | {
"text": [
"metalized reflective aluminium layer"
],
"answer_start": [
265
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
9c1ef8a9b06b7d9cd864b19bbf2419679b923601 | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | What caused laser rot? | {
"text": [
"substandard adhesive"
],
"answer_start": [
59
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
53adc5b4e728f6d5a8ba0cd6584d3279445e0cca | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | Which part of a LaserDisc is most crucial for playback? | {
"text": [
"aluminium layer"
],
"answer_start": [
286
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
db17e0a0b1945de2c9abf2cd9c7e046f5b9db30b | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | A LaserDisc suffering from laser rot can display what symptoms despite seeming normal to the naked eye? | {
"text": [
"skip and the movie to exhibit excessive speckling noise"
],
"answer_start": [
618
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
9306a1677fe149fd5adc9105af481cacdb497f65 | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | Laser rot is the result of what chemical reaction happening? | {
"text": [
"oxidize"
],
"answer_start": [
317
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
be790694ab5f0004b878e94618c98d293023c7d9 | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | What manufacturing terminology is used for a problem that early LDs sometimes exhibited? | {
"text": [
"color flash"
],
"answer_start": [
448
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
f7d5d15a8035d82b009ce893b8fa969b027ba52f | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | Laser rot is the result of what substance? | {
"text": [
"impurities that were able to penetrate the lacquer seal layer"
],
"answer_start": [
177
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
8affe55490c611e6800455880f781ef926db60df | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | What visual effect can be seen on failed laser discs? | {
"text": [
"black spots"
],
"answer_start": [
542
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
982c6597e0bfa689294f265b3cef47a155ce785c | LaserDisc | Many early LDs were not manufactured properly; sometimes a substandard adhesive was used to sandwich together the two sides of the disc.[citation needed] The adhesive contained impurities that were able to penetrate the lacquer seal layer and chemically attack the metalized reflective aluminium layer, causing it to oxidize and lose its reflective characteristics. This was a problem that was termed "laser rot" among LD enthusiasts, also called "color flash" internally by LaserDisc-pressing plants. Some forms of laser rot could appear as black spots that looked like mold or burned plastic which cause the disc to skip and the movie to exhibit excessive speckling noise. But, for the most part, rotted discs could actually appear perfectly fine to the naked eye. | What chemical reaction causes "color flash"? | {
"text": [
"oxidize"
],
"answer_start": [
317
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
cdeef0012832389bd804c4aefd1ec88182bdaacc | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | What analogous argument about DVDs exists? | {
"text": [
"CD versus LP"
],
"answer_start": [
15
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
d5492686622b996d9dd6018ed2401d812c567d1f | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | What was an initial shortfall of digital media? | {
"text": [
"compression or encoding problems"
],
"answer_start": [
259
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
523bc6e8925cc46cf08417f9c06002b0430727fe | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | Why would one choose a DVD over a LaseDsic? | {
"text": [
"However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers"
],
"answer_start": [
348
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
6f3c2f548f8ad43df0db374fe9259ca7e04e682e | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | When DVDs first came around, what did some people say were superior? | {
"text": [
"LaserDisc"
],
"answer_start": [
114
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
1d2e590b802e7d2c9cdd699e0252afab1e8b47b3 | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | What is the difference between the CD and LP? | {
"text": [
"sound quality"
],
"answer_start": [
28
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
bc6f2916f38b54cb6a2c276c4229affa30657ac1 | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | What is the advantage of the CD? | {
"text": [
"LaserDisc maintains a \"smoother\", more \"film-like\", natural image"
],
"answer_start": [
114
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
950aa66f750003ffeeb71a75078874eb4a3a28f3 | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | What lacks the sharper and clearer look of DVDs? | {
"text": [
"LaserDisc"
],
"answer_start": [
406
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
5d5d5650e92c3110b5e6e2a96adcb232061857b4 | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | What type of image do some say isn't as real? | {
"text": [
"DVD"
],
"answer_start": [
186
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
e98eec11ac522942797b0ef5711b53ad68e29236 | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | Why would one choose a LaserDisc? | {
"text": [
"Early DVD demo discs often had compression or encoding problems"
],
"answer_start": [
228
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
f99ee671f0b686c42a2c3460416bd72c2c584e8b | LaserDisc | Similar to the CD versus LP sound quality debates common in the audiophile community, some videophiles argue that LaserDisc maintains a "smoother", more "film-like", natural image while DVD still looks slightly more artificial. Early DVD demo discs often had compression or encoding problems, lending additional support to such claims at the time. However, the video signal-to-noise ratio and bandwidth of LaserDisc are substantially less than that of DVDs, making DVDs appear sharper and clearer to most viewers. | What was an issue with the discs? | {
"text": [
"DVD still looks slightly more artificial"
],
"answer_start": [
186
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
dbb0f84fb5b272a54fa9613e11ced9a7353ac911 | LaserDisc | Only one 5.1 surround sound option exists on a given LaserDisc (either Dolby Digital or DTS), so if surround sound is desired, the disc must be matched to the capabilities of the playback equipment (LD Player and Receiver/Decoder) by the purchaser. A fully capable LaserDisc playback system includes a newer LaserDisc player that is capable of playing digital tracks, has a digital optical output for digital PCM and DTS audio, is aware of AC-3 audio tracks, and has an AC-3 coaxial output; an external or internal AC-3 RF demodulator and AC-3 decoder; and a DTS decoder. Many 1990s A/V receivers combine the AC-3 decoder and DTS decoder logic, but an integrated AC-3 demodulator is rare both in LaserDisc players and in later A/V receivers. | The audio technology option made by an american company based in California that is used on LasarDisc is called? | {
"text": [
"DTS"
],
"answer_start": [
88
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
64987df49c1435f9e21aca182ec7f45169937b2c | LaserDisc | Only one 5.1 surround sound option exists on a given LaserDisc (either Dolby Digital or DTS), so if surround sound is desired, the disc must be matched to the capabilities of the playback equipment (LD Player and Receiver/Decoder) by the purchaser. A fully capable LaserDisc playback system includes a newer LaserDisc player that is capable of playing digital tracks, has a digital optical output for digital PCM and DTS audio, is aware of AC-3 audio tracks, and has an AC-3 coaxial output; an external or internal AC-3 RF demodulator and AC-3 decoder; and a DTS decoder. Many 1990s A/V receivers combine the AC-3 decoder and DTS decoder logic, but an integrated AC-3 demodulator is rare both in LaserDisc players and in later A/V receivers. | From what period were receivers made that had integrated demodulators? | {
"text": [
"1990s"
],
"answer_start": [
577
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
bfe9b606f917d28badb77a58a1c8b2f37160c45c | LaserDisc | Only one 5.1 surround sound option exists on a given LaserDisc (either Dolby Digital or DTS), so if surround sound is desired, the disc must be matched to the capabilities of the playback equipment (LD Player and Receiver/Decoder) by the purchaser. A fully capable LaserDisc playback system includes a newer LaserDisc player that is capable of playing digital tracks, has a digital optical output for digital PCM and DTS audio, is aware of AC-3 audio tracks, and has an AC-3 coaxial output; an external or internal AC-3 RF demodulator and AC-3 decoder; and a DTS decoder. Many 1990s A/V receivers combine the AC-3 decoder and DTS decoder logic, but an integrated AC-3 demodulator is rare both in LaserDisc players and in later A/V receivers. | Which of the following is not a potential surround sound option for LaserDiscs: Dolby Digital, LD or DTS? | {
"text": [
"LD"
],
"answer_start": [
199
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
ae335570b9abca233dfbc8b92059f7b02805b755 | LaserDisc | Only one 5.1 surround sound option exists on a given LaserDisc (either Dolby Digital or DTS), so if surround sound is desired, the disc must be matched to the capabilities of the playback equipment (LD Player and Receiver/Decoder) by the purchaser. A fully capable LaserDisc playback system includes a newer LaserDisc player that is capable of playing digital tracks, has a digital optical output for digital PCM and DTS audio, is aware of AC-3 audio tracks, and has an AC-3 coaxial output; an external or internal AC-3 RF demodulator and AC-3 decoder; and a DTS decoder. Many 1990s A/V receivers combine the AC-3 decoder and DTS decoder logic, but an integrated AC-3 demodulator is rare both in LaserDisc players and in later A/V receivers. | If you are buying a LaserDisc and have playback equipment for Dolby Digital, you should make sure the surround sound option on the disc is not what? | {
"text": [
"DTS"
],
"answer_start": [
88
]
} | {
"split": "train",
"model_in_the_loop": "Combined"
} |
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