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Ch 27 - Chapter 27 Prokaryotes Goals 0 Know differences...

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9-11-07 Chapter 27 Prokaryotes Goals 0. Know differences between three domains (Archaea, Bacteria and Eukaryotes) 1. Know 3 main bacterial cell shapes, differences in cell walls 2. Give examples of how bacterial organelles are simpler than those in eukaryotes 3. Understand the basics of bacterial sex, nutrition and why photosynthesis evolved early 4. Know an example of each major bacterial clade Know what disease is caused by each bacteria. 5. Know why prokaryotes are important to ecosystems Prokaryotes 0. Diverse, 5,000 species but up to four million possible 1. Some deleterious but most are beneficial 2. Symbionts in eukaryotes, origin of mitochondria and chloroplasts *Symbiotic Organisms 3. Two main domains: 0. Archaea 1. Bacteria Basic Cell Structure 6. Unicellular or colonial 7. Three main shapes:spheres, rods and helices 8. Cell wall of peptidoglycan outside cell membrane 9. Cell wall separates bacteria into two functional groups, gram positive and negative 10.Double cell wall of gram - bacteria more resistant and pathogenic 11.Penicillin breaks down bacterial cell walls (does not affect eukaryotic cells)
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