Diversity of prokaryotes...

Diversity of prokaryotes... - 1) Diversity of prokaryotes...

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1) Diversity of prokaryotes environmental conditions a) Temperature i) Grows best below 20 degrees. ii) Grows best between 20 degrees and 50 degrees. b) pH (acidic or basic environment) i) grows well at pH of 1 to 2 (acidic) ii) grows best near neutral pH iii) grows well at pH as high as 9 c) moisture i) most cells require a minimum moisture content ii) some cells grow in the near absence of moisture (spores) d) salt i) Most cells require a moderate level of salt. ii) Some cells can exist in a very high salt concentrations (halophiles) e) Oxygen availability i) Require oxygen for growth aerobic ii) Require lack of oxygen for growth anaerobic f) Nutrient availability i) Most microorganisms require organic and inorganic nutrients to grow and survive. ii) Cyanobacteria grow in the absence of key nutrients: e.g. can convert CO2 from air into organic cellular molecules. 2) Archaea
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a) Morphologically, the two kingdoms of prokaryotes appear similar. However, they have major biochemical differences such as their cell walls.
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Diversity of prokaryotes... - 1) Diversity of prokaryotes...

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