BLG 144 Chapter Notes - Chapter 28: Cyanobacteria, Ribosomal Rna, Bioremediation
27 Dec 2017
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Chapter 28 bacteria and archaea: bacteria and archaea may be tiny, but they are ancient, diverse, abundant, and ubiquitous. A few bacteria cause infectious disease; some are effective at cleaning up pollution: as a group, bacteria and archaea live in virtually every habitat known and use remarkably diverse types of compounds in cellular respiration and fermentation. Although cell size is usually small and overall morphology is relatively simple, their biochemistry is extremely sophisticated bacteria and archaea play a key role in ecosystem. Photosynthetic bacteria were responsible for the evolution of the oxygen atmosphere; bacteria and archaea cycle nutrients through terrestrial and aquatic environments. 3 branches on the tree of life bacteria, archaea, and eukarya. Bacteria and archaea are unicellular or filamentous and are prokaryotic (lack a membrane-bound nucleus). Bacteria have a unique compound called peptidoglycan in their cell walls. Archaea have unique phospholipids in their plasma membranes the hydrocarbon tails of the phospholipids contain isoprene.
