key bio exam 3 - BIO 311C EXAM 3 Mark the one option that...

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BIO 311C EXAM 3 Mark the one option that best answers the question or completes the sentence (2 points each): 1) Photophosphorylation in photosynthesis is most similar to: 1)B A) substrate level phosphorylation in glycolysis B) oxidative phosphorylation in cellular respiration C) calvin cycle D) carbon fixation E) generation of proton motive force 2) For each glucose molecule, after glycolysis (before Citric acid cycle) what is the NET gain of ATP, NADH, pyruvate and FADH2? 2) E A) 2, 2, 2, 1 B) 2, 2, 2, 2 C) 1, 2, 3, 4 D) 1, 2 , 2 ,0 E) 2, 2, 2, 0 3) The mechanism in which the end product of a metabolic pathway inhibits an earlier step in the pathway is known as 3)___D___ A) metabolic inhibition. B) reversible inhibition. C) noncooperative inhibition. D) feedback inhibition. E) allosteric inhibition. 4) Some photosynthetic organisms contain chloroplasts that lack photosystem II, yet are able to survive. The best way to detect the lack of photosystem II in these organisms would be 4) __C__ A) to test for CO 2 fixation in the dark. B) to test for production of either sucrose or starch. C) to test for liberation of O 2 in the light. D) to determine if they have thylakoids in the chloroplasts. E) all of the above 5) Which of the following about phosphofructokinase is/are true: 5) D A) catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate B) is inhibited by ATP and activated by AMP 1
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C) is activated by AMP and citrate D) A and B E) A and C 6) The product formed in the first step of glycolysis is . The enzyme used to form this product is 6) D A) glucose, phosphofructokinase B) Glyceraldehyde 3 phosphate, hexokinase C) Glyceraldehydes 3 phosphate, kinase D) Glucose 6 phosphate, hexokinase E) Glucose 6 phosphate, aldolase 7) Which of the following statements describes the results of this reaction? C6H12O6 + 6O2 6CO2 + 6 H2O + Energy 7) ___D___ A) O2 is reduced and CO2 is oxidized. B) CO2 is reduced and O2 is oxidized. C) C6H12O6 is reduced and CO2 is oxidized. D) C6H12O6 is oxidized and O2 is reduced. E) O2 is oxidized and H2O is reduced. Refer to figure 1 below to answer the following questions. 8) Which curve was most likely generated from analysis of an enzyme from human stomach where conditions are strongly acidic? 8) __A____ A) curve 4 B) curve 1 C) curve 5 D) curve 2 E) curve 3 9) Which curve represents the behavior of an enzyme taken from a bacterium that lives in hot springs at temperatures of 70°C or higher? 9) ____B__ A) curve 1 B) curve 3 C) curve 5 D) curve 2 E) curve 4 2
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Fig 1 10) Which of the following reactions is most likely to be coupled to the reaction ATP + H2O →ADP + Pi (ΔG = -7.3 kcal/mol)? 10) ___C___ A) B + Pi → BP (ΔG = +8 kcal/mol) B) CP → C + Pi (ΔG = -4 kcal/mol)
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This note was uploaded on 09/01/2009 for the course BIO 311C taught by Professor Satasivian during the Fall '08 term at University of Texas.

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key bio exam 3 - BIO 311C EXAM 3 Mark the one option that...

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