Questions for lecture 2

Questions for lecture 2 - Questions for lecture 2 Be...

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Questions for lecture 2 Be comfortable with the following terms: bilayer Saturated/unsaturated fatty acid Sterol Hopanoid Tetraether Osmotic pressure Osmolysis Porin Facilitated diffusion Peptidoglycan Murein L- and D- amino acids Gram positive/Gram negative Gram stain Teichoic/Lipoteichoic Acid Periplasm Lipopolysaccharide Pseudomurein S-layer Contractile vacuole Slime layer/capsule Pilus Type III Pilus Type IV Pilus Bacterial Flagellum Archaeal Flagellum Twitching Motility One of the major concerns of molecular biologists is how structure relates to function. How does molecular structure relate to function for the cell membrane in a psychrophilic (cold-loving) bacterium? In a thermophilic (heat-loving, about 80 ° C) bacterium? In a hyperthermophilic (>100 ° C) archaeon? Why is degree of saturation of membrane phospholipids more useful for establishing “lifestyle” information than for phylogenetic information? Why does freezing a membrane kill a cell? Why does melting a membrane kill a cell? How can hopanoids and sterols help to maintain membrane integrity and fluidity at both high and low extremes of an organism’s temperature range? How does structure relate to function for the cell wall of a bacterium? Why is membrane fluidity important for a cell? How do different types of cells maintain membrane fluidity over a range of temperatures? Based on what we’ve covered so far, what chemical tests could you employ to tell the
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This note was uploaded on 04/05/2011 for the course MIC 102 taught by Professor Appleman during the Fall '08 term at UC Davis.

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Questions for lecture 2 - Questions for lecture 2 Be...

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