21_Microbial_diversification

21_Microbial_diversification - Microbial diversification...

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Microbial diversification Today’s questions: I. What are microbes and prokaryotes? II. What features of prokaryotes allow them to become such a diverse group?
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Microbes I. What are microbes and prokaryotes?
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Do you really know who you are?! Colored scanning electron micrograph of H pylori bacteria on the surface of the human intestine. Dental plaque, scanning electron micrograph illustrating the diversity of microbes in plaque . I. What are microbes and prokaryotes?
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Bacteria Archaea Thermotogales Flavobacteria Cyanobacteria Purple bacteria Gram positives Methanosarcina Thermoproteus Pyrodictium T. celer Methanococcus Methobacteria Green nonsulfur bacteria Halophiles Diplomonads MIicrosporidia Trichomonads Flagellates Ciliates Slime molds Entamoebae Animals Plants Fungi (Woese 1990; Service 1997) Eukarya Three domains of life Result of DNA evidence & work by Carl Woese I. What are microbes and prokaryotes?
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* * * What is a microorganism?! I. What are microbes and prokaryotes?
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Microbes are the most abundant organisms on earth Torsvik et al . Science 2002 Prokaryotic abundance Largest mass of living material on earth. lake water 10 9 cells I. What are microbes and prokaryotes?
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Relative Microbe Sizes I. What are microbes and prokaryotes?
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Relative Microbe Sizes “typical” microbe 1-5 um long and 1 um wide 1 um = 10 -6 m 500 bacteria 1 um long fit across a “.” I. What are microbes and prokaryotes?
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With the naked eye Microbes in Yellowstone hotsprings I. What are microbes and prokaryotes?
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This note was uploaded on 05/25/2010 for the course BIO 180 taught by Professor Bradshaw during the Spring '09 term at University of Washington.

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21_Microbial_diversification - Microbial diversification...

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