Bacteria and Archea - Bacteria and Archea A. Common...

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Bacteria and Archea A. Common Characteristics 1. Prokaryotic- no membrane bound organelles, no true nuclei, no cytoskeleton 2. No mitosis- binary fission (2 equal halves) 3. No meiosis- single chromosome, 1N, haploid 4. Smallest living cells (1-10μm) 5. Unicellular- each cell is fully viable 6. Reproduction- binary fission (A-sexual) 7. Genetic recombination- getting additional genes a. transformation- living cells can absorb and incorporate free-floating DNA from dead cells that break apart b. transduction - bacteriophage injects DNA or RNA into cells but sometimes DNA from attacked cell gets into phage and the phage injects it into another cell
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c. conjugation- DNA passes through a tube between two cells - not reproduction because no meiosis, no homologous pairs - not reproduction because no offspring - not reproduction because bacteria is 1N B. Bacteria
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1. Domain: Bacteria 2. Kingdom: Eubacteria 3. Cell Walls- have murein 4. Cell membranes: Ester links 5. Division Level- Gracilicutes (thin-skinned), Gram negative bacteria
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This note was uploaded on 04/07/2008 for the course BS 131 taught by Professor Smith during the Spring '08 term at University of the Sciences in Philadelphia.

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Bacteria and Archea - Bacteria and Archea A. Common...

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