nov 17 - size of bacterial cells In 1993 an unusually large...

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Microbial Genetics 11/17/06, 11/20/06 Major ideas and questions: 1. Prokaryotes differ from eukaryotes in both cell structure and genetics. 2. How is genetic diversity generated in bacteria? 3. How do bacteria acquire new genes? 4. Plasmids contribute to genetic diversity in bacteria. 5. How can you map genes and determine complementation in a haploid organism? 6. Bacterial viruses have two major pathways for replication: lysis and lysogeny. 7. Viruses can transfer genetic information between cells. 8. How can transduction and conjugation be used to map genes and determine biochemical pathways? Something to think about: 1. The typical bacterium is about 1 micron in diameter. What factors limit the
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Unformatted text preview: size of bacterial cells? In 1993, an unusually large bacterium, Epulopiscium fischelsoni , was found in the gut of sturgeon. This bacterium is about the size of a small hyphen (-) and can be seen with the naked eye. This size record was broken in 1999 with the discovery of a single-celled giant that lives in the ocean and is named Thiomargarita namibiensis , which means "sulfur pearl of Namibia”. T. namibiensis is 1 mm in diameter. How do you think these bacteria might overcome the problems associated with large size? Klug textbook questions, Chapter 6 9, 13, 15, 18, 26 T. namibiensis cells (white and clear blobs) next to a fruit fly's head Epulopiscium...
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