Title: The Evolution of Prokaryotes: Archaebacteria and Eubacteria - Video & Lesson Transcript | Study.com
Headings: The Evolution of Prokaryotes: Archaebacteria and Eubacteria
The Evolution of Prokaryotes: Archaebacteria and Eubacteria
Lesson Transcript
Characteristics of Prokaryotes
Domain Archaea
Domain Bacteria
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The Evolution of Prokaryotes: Archaebacteria and Eubacteria
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Content: Antibiotics work by killing bacteria. However, they must be specialized for certain types of bacteria and used properly. Because bacteria can evolve quickly, they can sometimes become immune to an antibiotic. This antibiotic resistance is why some antibiotics that were commonly used are no longer used - they are no longer effective at killing bacteria. Examples of diseases caused by bacteria include Lyme disease, cholera and strep throat. Lesson Summary
While both archaebacteria and eubacteria are prokaryotic, they are evolutionarily different. All prokaryotic cells are unicellular, have a cell wall and lack both a nucleus and membrane-bound organelles. Some use light energy to make food and are photoautotrophs, while others use chemicals to make food and are chemoautotrophs. The most ancient form of life on Earth belonged to the domain archaea, which contains the kingdom archaebacteria. These organisms live in extreme environments that most other life forms find uninhabitable.