Exam4_2012_B

Enzyme levels in cytosol leading to increased

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Unformatted text preview: rease, decrease, or no effect. Answer: _______________________ (C) (2 pt) Identify the effect of PKA phosphorylation on the activity of normal (wild- type) ACC as activating, inactivating, or no effect. Answer: _______________________ (D) (2 pt) Identify the effect of the serine to alanine mutation on the activity of ACC as activating, inactivating, or no effect. Answer: _______________________ (E) (2 pt) Identify the effect of the serine to alanine mutation on fatty acid synthesis as increase, decrease, or no effect. Answer: _______________________ Question 10. (4 pts) Of the following conditions, circle the one that is most likely a result of inactivation of lipoprotein lipase and provide a brief explanation to include the substrate of lipoprotein lipase. There could be more than one correct answer. In that case you only have to pick one of the right answers. (A) (B) (C) (D) High concentrations of triacylglycerol in blood after a fatty meal Fatty liver (high levels of triglyceride in hepatocytes) Inability to exercise under fasted conditions Low fatty acid concentration in blood under fasted conditions Page 4 of 4 Name: _______________________________________ Net ID: ______________________ Answer: Question 11. (4 pts) Of the following conditions, circle the one that is most likely a result of inactivation of hormone- sensitive lipase and provide a brief explanation to include the substrate of hormone- sensitive lipase. There could be more than one correct answer. In that case you only have to pick one of the right answers. (A) High concentrations of triacylglycerol in blood after a fatty meal (B) Fatty liver (high levels of triglyceride in hepatocytes) (C) Inability to exercise (low intensity but long duration) under fasted conditions (D) Low fatty acid concentration in blood under fasted conditions Answer: Question 12. (8 pts) Of each of the following pairs of molecules, circle the one that has a lower oxidation number or more reduced. Draw an arrow showing the direction of electron transfer as shown in the example depicted for lactate and pyruvate and label number of electrons transferred. (A) +"2"e–" (A) (3 pt) (B) (C) Carbon monoxide Carbon dioxide (D)...
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