EX3sp07a - Exam 3 Spring 07 1. Which of the following does...

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1. Which of the following does NOT carry a “high energy” bond? a. PEP b. UDP-glucose c. acetyl CoA d. succinyl CoA *e. pyruvate 2. 32 P is a radioactive isotope of phosphorus, often used to trace phosphate or derivatives in metabolic pathways. If 1,3 diphosphosphoglyceric derived from glycolysis is shown to be labeled with 32 P in the C-1 position, what was the most immediate source of the radioactivity? a. UT 32 P b. AT 32 P c. 32 PPi *d. 32 Pi e. 32 PEP 3. A common mechanistic feature of alpha-ketoglutarate dehydrogenase, citrate synthase and pyruvate dehydrogenase is that all three involve a(n): a. ATP b. biotin *c. a carbanion d. a carbonium ion e. a dehydration/rehydration 4. Consider a reaction with a standard free energy of 40 Kjoules/mole deg. What is the minimum number of ATP molecules that would need to be coupled to this reaction for the reaction to proceed in the forward direction i.e. accumulate product at the expense of substrate? a. none b. one *c. two d. three e. thirty 5. In the same number of turns of the TCA cycle which will yield 9 NADH + H + , how many FADH 2 would also made? *a. 3 b. 6 c. 9 d. 12 e. 15 6. Fill in: ___________ is an isozyme of ___________ and has a _______ Km for substrate a. Hexokinase glucokinase low b. Hexokinase glucokinase high c. Glucokinase hexokinase low *d. Glucokinase hexokinase high e none of the above are correct 7. Which of the following is NOT a product or substrate in the pyruvate dehydrogenase reaction? a. pyruvate
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This note was uploaded on 04/14/2010 for the course BHC 3023 taught by Professor Harmen during the Spring '10 term at University of South Florida - Tampa.

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EX3sp07a - Exam 3 Spring 07 1. Which of the following does...

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