Exam 3 - Spring09 - ex3sp09 Multiple Choice Identify the...

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ex3sp09 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Which of the following is NOT essential for (or does not accompany) the synthesis of ATP by oxidative phosphorylation? a. membrane potential d. hydrogen ion concentration gradient b. production of water e. increase in the pH of the matrix of the mitochondria c. a high energy phosphorylated intermediate 2. In glycolysis, fructose 1,6-bisphosphate is converted to two products with a standard free-energy change ( G o ’) of 23.8 kJ/mol. Under what conditions (encountered in a normal cell) will the free energy change ( G), be negative, enabling the reaction to procede to the right? a. If the concentrations of the two products are high relative to that of fructose 1,6- bisphosphate d. When there is a high concentration of fructose 1,6-bisphosphate relative to the concentration of products b. The reaction will not go to the right spontaneously under any conditions because the G o is positive e. When there is a high concentration of products relative to the concentration of fructose 1,6- bisphosphate c. Under standard conditions, enough energy is released to drive the reaction to the right 3. Which of the following is NOT required for the overall activity of pyruvate dehydrogenase? a. CoASH d. TPP b. ATP e. FAD c. NAD 4. Which of the following is correct concerning mitochondrial ATP synthase? a. It catalyzes the formation of ATP even though the reaction has a high positive delta G o d. When it catalyzes the ATP synthesis reaction, the delta G o is actually close to zero b. It is actually an ATPase and only catalyzes the hydrolysis of ATP e. It consists of Fo and F1 subunits, which are transmembrane, integral proteins c. It can synthesize ATP after it is extracted from broken mitochondria 5. An enzyme found in both glycolysis and gluconeogenesis is: a. 3-phosphoglycerate kinase d. PFKI b. hexokinase e. glucose 6-phosphatase c. pyruvate kinase 6. Cyclic AMP is an intermediate in the function of which of the following hormones? a.
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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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Exam 3 - Spring09 - ex3sp09 Multiple Choice Identify the...

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