Q03 G hour AS

Q03 G hour AS - CH357 Introduction to Microbiology Quiz 3...

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CH357 Introduction to Microbiology Cadet ________________________ Quiz 3 30 points Academic term 2008-1 (4) 1. Azotobacter vinelandii protects its nitrogenase by a. increasing its use of alternative terminal electron acceptor. b. synthesizing a thick exopolysaccharide to restrict oxygen flux. c. transporting the nitrogenase into a storage organelle. d. all of the above. (4) 2. How does Azotobacter deal with excess oxygen? a. It does not. b. It switches to fermentation. c. it alters its electron transport chain. d. releases its exopolysaccharide to the environment. (4) 3. Bacterial biofilms could be found a. on submerged rocks b. inside water pipes c. on artificial hips d. all of the above. (4) 4. The trophosome is a. the organ in thermal vent tube worms which harbors endosymbiotic bacteria. b. the area in stratified lakes harboring the greatest trophic activity. c. the fissures in bedrocks filled with water and hydrogen utilizing bacteria. d. none of the above.
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Q03 G hour AS - CH357 Introduction to Microbiology Quiz 3...

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