BIOL 1010 Lecture Notes - Anaerobic Respiration, Cyanobacteria, Escherichia Coli

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12 Oct 2012
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Essential to life on earth; decompose dead organisms and return vital chemicals to. Simpler genome, separation of the genetic material- dna into nucleus (euk) Cell wall of prokaryotes has a different composition and structure. Believed to have evolved from the earliest cells. That is how taxonomic level above kingdom called domain has appeared. Considered the more modern prokaryotes, having evolved later. Differ from archae in structure, biochemical and physiological characteris. Domains eukarya and archaea share s common ancestor that lived more recently than the ancestor common to archea and bacteria. Molecular studies support hypothesis that the arcaea are most closely related to eukaryotes than they are to bacteria. Cocci spherical prokaryotes (diplococcic, streptococci, staphylococci) Helices helical prokaryotes (includes spirillla and spirochetes. Cell wall- of bacteria contain peptidoglycan instead of the cellulose found in cell walls of plants and some algae. Prevent the cell from bursting in hypotonic environment.

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