BIOLOGY PRACTICE TEST 1

BIOLOGY PRACTICE TEST 1 - Example Exam Questions 1....

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Example Exam Questions 1. Bacteriophage use bacterial surface molecules as receptors in order to initiate lytic or lysogenic infection. a. What advantage would using an integral outer membrane protein or an O- linked sugar residue in lipopolysaccharide have over using flagellin or pilin as a receptor for a bacteriophage that infects gram-negative bacteria? b. What would be an appropriate surface molecule to use as a receptor for bacteriophage that infect gram-positive bacteria? 2. The movement of an object in a fluid depends in part on the physical properties of the fluid, and in part on the dimension of the object in question. a. Give the mathematical expression of the Reynolds number (R). What are the units of R, and what does the number signify? b. State the approximate magnitude of R for microorganisms. What consequences does R have for possible mechanisms of microbial motility? 3. Motility is a well-studied area of microbiology, particularly because of its importance in microbial survival. a.
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BIOLOGY PRACTICE TEST 1 - Example Exam Questions 1....

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