Chapter 27 Lecture

Chapter 27 Lecture - Bacteria and Archaea Bacteria All...

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Bacteria and Archaea Bacteria and Archaea
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All organisms have many things in common… Conduct glycolysis Replicate DNA Transcription and translation Have plasma membranes
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The Prokaryotes Microscopic Unicellular No cytoplasmic organelles DNA is circular Found in every habitat on the planet
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Shapes of Prokaryotic Cells Coccus Spherical Bacillus
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Movement Most do not move Corkscrew-like motion Rolling or gliding Flagella
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Cell Walls Contain peptidoglycan Provide protection for the organism The Gram Stain Gram-positive bacteria Gram-negative bacteria Have less peptidoglycan in their cell walls
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Asexual Reproduction Fission Genetic recombination does occur Exchange of DNA between two cells Bacteria multiply rapidly The generation time of E. coli is 20 min.
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Prokaryotic Metabolism Anaerobic vs. aerobic Nitrogen and sulfur metabolism Denitrifiers Nitrogen fixers Nutritional needs
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Chapter 27 Lecture - Bacteria and Archaea Bacteria All...

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