Q: Answer the following question given this paragraph:   Next, light passes through the pupil. The pupil is a black opening in the eye that lets light enter the eye.   Q: What is the name of the black opening in the eye that lets light enter?   Choices:  - iris  - cornea  - inlet  - pupil  A:
A: pupil


Q: Answer the following question given this paragraph:   Amino acid units in a protein are connected by peptide bonds. What is another name for the functional group linking the amino acids?.   Q: Amino acid units in a protein are connected by what bonds?   Choices:  - acidic  - covalent  - ionic  - peptide  A:
A: peptide


Q: Answer the following question given this paragraph:   Thermoregulatory Adjustments The fetus floats in warm amniotic fluid that is maintained at a temperature of approximately 98.6°F with very little fluctuation. Birth exposes newborns to a cooler environment in which they have to regulate their own body temperature. Newborns have a higher ratio of surface area to volume than adults. This means that their body has less volume throughout which to produce heat, and more surface area from which to lose heat. As a result, newborns produce heat more slowly and lose it more quickly. Newborns also have immature musculature that limits their ability to generate heat by shivering. Moreover, their nervous systems are underdeveloped, so they cannot quickly constrict superficial blood vessels in response to cold. They also have little subcutaneous fat for insulation. All these factors make it harder for newborns to maintain their body temperature. Newborns, however, do have a special method for generating heat: nonshivering thermogenesis, which involves the breakdown of brown adipose tissue, or brown fat, which is distributed over the back, chest, and shoulders. Brown fat differs from the more familiar white fat in two ways: • It is highly vascularized. This allows for faster delivery of oxygen, which leads to faster cellular respiration. • It is packed with a special type of mitochondria that are able to engage in cellular respiration reactions that produce less ATP and more heat than standard cellular respiration reactions.   Q: Nonshivering thermogenesis, which involves the breakdown of brown adipose tissue, is a special methods newborns have for what purpose?   Choices:  - losing heat  - harnessing heat  - moving heat  - generating heat  A:
A: generating heat


Q: Answer the following question given this paragraph:   Evolution is a change in the characteristics of living things over time. As described by Darwin, evolution occurs by a process called natural selection . In natural selection, some members of a species, being better adapted or suited to their environment, produce more offspring than others, so they pass "advantageous traits" to their offspring. Over many generations, this can lead to major changes in the characteristics of the species. Evolution explains how living things are changing today and how modern living things have descended from ancient life forms that no longer exist on Earth. As living things evolve, they generally become better suited for their environment. This is because they evolve adaptations. An adaptation is a trait that helps an organism survive and reproduce in a given environment.   Q: Evolution occurs by what process whereby better-adapted members pass along their traits, according to darwin?   Choices:  - organic selection  - natural change  - spontaneous variation  - natural selection  A:
