exam 2 - Biology 150 Fall 2008 Second Exam Wilson Form 1...

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Biology 150 Fall 2008 Second Exam Wilson Form 1 Part I: Give the single BEST answer to each question (2.5 points each). Use the answer sheet to record your answer. 1. When only one ion is permeable across a membrane, and the concentration of that ion is different on the two sides of the membrane, equilibrium occurs when: a. the ion is in equal concentrations on the two sides b. there is zero net charge across the membrane c. the voltage across the membrane is enough to offset the chemical gradient d. the non-permeable ions are in equal concentration on the two sides of the membrane e. the non-permeable ions just offset the charge of the permeable ion 2. A hypertonic solution: a. causes no change in the size of an animal cell b. causes an animal cell to shrink c. causes an animal cell to swell and burst d. causes sodium to exit a cell selectively e. causes potassium to enter a cell selectively 3. How do proteins in the lumen of the rough ER get to the smooth ER? a. vesicles containing the proteins bud off of the rough ER and fuse with the smooth ER b. chaperones carry the proteins from the rough to the smooth ER c. they flow through the lumen, which is continuous between rough and smooth ER d. they travel from the rough ER to the golgi and then are passed on to the smooth ER e. both a and d, above, are correct 4. In the citric acid cycle (Krebs cycle): a. ATP is generated by oxidative phosphorylation b. ATP is generated by substrate-level phosphorylation c. NADH is converted to NAD+ d. Pyruvate is generated (2 for each glucose) e. Acetyl-CoA is generated 5. During oxidative phosphorylation: a. NADH is generated b. an electron transport chain undergoes a series of reduction-oxidation reactions c. water is generated d. hydrogen ions are pumped across the inner mitochondrial membrane e. answers b, c, and d, above are correct 6. In cyclic electron flow during the light reactions of photosynthesis, a. both photosystems, I and II, are used b. NADPH is produced c. a proton gradient is formed d. ATP is made by ATP synthase e. both c and d, above, are correct
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7. In the Calvin cycle a. ATP is generated b. oxygen is generated c. sugar is made d. both b and c, above, are correct e. all of the above are correct 8. Photorespiration a. is part of the light reactions in photosynthesis b. generates sugars during the Calvin cycle
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This note was uploaded on 12/01/2010 for the course PSY 110 taught by Professor Winters during the Spring '08 term at University of Miami.

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exam 2 - Biology 150 Fall 2008 Second Exam Wilson Form 1...

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