BIO153H5 Lecture Notes - Lecture 6: Stromatolite, Wella, Cyanobacteria
Document Summary
Bacteria and archaea have an impact on humans and global ecosystems. Few bacteria can cause infectious diseases, some bacterial and archeal species can clean up pollution, photosynthetic bacteria created the oxygen atmosphere. Bacteria and archaea have been evolving for billions of years. Bacteria and archaea are small, but can live in any habitat. Use complex compound in cellular respiration and fermentations. Although both appear to be similar, evolve around 3. 5 billion years are not closely related as diverged away. Archaea is more closely related to humans. Bacteria and archaea form two of the three largest branches on tree of life (domains) All members of bacteria and archaea are unicellular and prokaryotic (lacking membrane bound nucleus) This model was possible because of the modern computation. It is a potential health problem because archaea cannot be destroyed by antibiotics. Archaea are bening when in close relationships with vertbretare. Archaea are mostly not found in close relationships with vertebrates.
