Classification of Prokaryotes

Classification of Prokaryotes - Disease Spirochetes Lyme...

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Classification of Prokaryotes Archae Features Cell walls Lacks peptidoglycen Cell membranes Lipids-stronger than in bacteria Lipids Lack fatty acids Have isoprene-branched hydrocarbon Isoprene chains Bonded to glycerol by ether linkages (euk & bacteria ester linkages) Extreme habitats Extremophiles Thermophiles Hot-45~110 o C Halophiles Salty ex) salt ponds, 20% salt Methanogens Produce CH 4 Strict anaerobes Live in O 2 free environment Bacteria Ecological Cyanobacteria Gram negative Endosymbiosis->chloroplasts photosynthesis Rhizobial bacteria Mutualistic relationship w/legumes Live in legumes (roots) Bacteria-N to plant Plant-organic compounds to bacteria
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Unformatted text preview: Disease Spirochetes Lyme disease, syphilis Rickettsia-rod-shaped Rocky mountain, spotted fever streptococci Bacteria vs. Archaea Structural characteristics Bacteria Archaea Nuclear envelope Absent absent Membrane-enclosed organelles Absent Absent Circular chromosome present Present Histones associated w/DNA Absent Present Peptidoglycan in cell wall present Absent Structure of lipids in plasma membrane straight-chain fatty acids bonded to glycerol by ester linkages Branched-chain hydrocarbons linked to glycerol by ester linkages...
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