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Unformatted text preview: Your Name: This is Form 1 of the exam. Please mark on your scoring sheet. 1 BMB461 Exam III 11-17-2006 The exam begins at 9:10am and finishes at 10:00am sharp. The time needed to fill in the scoring sheet is included. Important, please note on the bottom of the page the form number for this particular exam and mark it in the form box on the scoring sheet. The first 30 questions are worth 3 points each; the last 5 are worth 2 points each. Each question has only a single correct answer. 1. Glycolysis is divided into preparatory phase and payoff phase. How many if any NADH molecules are produced per glucose in the preparatory phase and how many if any are produced per glucose in the payoff phase? A. 0 and 1 B. 1 and 0 C. 1 and 2 D. 0 and 2 E. 2 and 2 F. 4 and 2 2. The payoff phase of glycolysis produces per glucose A. 1 Pyruvate B. 2 Glyceraldehyde 3-phosphates C. 1 Fructose 1-phosphate D. 4 ATP E. 2 Dihydroxyacetone phosphates F. 1 Glyceraldehyde 3-phosphate 3. The five enzymes of the payoff phase of glycolysis in alphabetical order are: 1. enolase, 2. glyceraldehyde 3-phosphate dehydrogenase, 3. phosphoglycerate kinase, 4. phosphoglycerate mutase, and 5. pyruvate kinase. In which order do they process glucose in glycolysis? A. 1,2,3,4,5 B. 2,3,4,1,5 C. 2,1,4,5,3 D. 4,3,5,1,2 E. 1,5,4,2,3 4. During the payoff phase of glycolysis 3-phosphoglycerate is directly converted to: A. 1,3 Bisphosphoglycerate, NADH, H + B. 2-Phosphoglycerate, NADH, H + C. 2-Phosphoglycerate, H 2 O D. 2-Phosphoglycerate E. Phosphoenolpyruvate, H 2 O 5. The enzyme catalyzing the second reaction of the preparatory phase of glycolysis is: A. Phosphoglycerate mutase B. Phosphoglucomutase C. Phosphohexose isomerase D. Pyruvate Kinase E. Triose phosphate isomerase Your Name: This is Form 1 of the exam. Please mark on your scoring sheet. 2 6. The net products of glycolysis after 10 reactions starting with glucose are: A. 2 Pyruvate, 2ATP, 2 H 2 O B. 2 Lactate, 2 NADH, 2H + C. 2 Pyruvate, 4 ATP, 2 NADH, 2 H 2 O D. 2 Lactate, 2 ATP, 2NADH, 2H + E. 2 Pyruvate, 2 NADH, 2H + , 2ATP, 2 H 2 O F. 2 Lactate, 2ATP, 2 H 2 O 7. In the direction of glycolysis the shown glycolytic intermediate is a substrate for which enzyme : A. Aldolase B. Enolase C. Phosphoglycerate kinase D. Glyceraldehyde 3-phosphate dehydrogenase E. Pyruvate kinase F. Phosphoglycerate mutase 8. The Class I Aldolase reaction mechanism involves: A. TPP B. Biotin C. Pyridoxalphosphate D. NADH E. ATP F. Schiff base 9. Which glycolytic enzyme requires a phosphorylated histidine in its active site?...
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- Spring '07