exam 3 biochem.docx - Question 1 5 out of 5 points In the...

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Question 1 5 out of 5 points In the fed state after consuming a meal enriched with carbohydrates, what two molecules accumulate in the citric acid cycle and are subsequently transported from the mitochondrial matrix into the cytoplasm for fatty acid synthesis? Selected Answer: Citrate and ATP Correct Answer: Citrate and ATP Question 2 5 out of 5 points In the fed state after consuming a meal enriched with carbohydrates, what three enzymes are indirectly activated by insulin to stimulate fatty acid and triacylglycerol synthesis? Selected Answer: Phosphoprotein phosphatase, pyruvate dehydrogenase, and citrate lyase Correct Answer: Phosphoprotein phosphatase, pyruvate dehydrogenase, and citrate lyase Question 3 5 out of 5 points In comparing fatty acid elongation catalyzed by fatty acid synthase (FAS) and the fatty acid elongation system (FAES), which statement is true? Selected Answer: The elongation reactions are initiated by a condensation reaction using malonyl-CoA followed by a reduction reaction with NADPH, a dehydration reaction, and another reduction reaction with NADPH. Correct Answer: The elongation reactions are initiated by a condensation reaction using malonyl-CoA followed by a reduction reaction with NADPH, a dehydration reaction, and another reduction reaction with NADPH. Question 4 5 out of 5 points Which of the following statements are true concerning the synthesis of glycerophospholipids and triacylglycerols? Selected Answer: The synthesis of glycerophospholipids is feedback inhibited by a glycerophospholipid while the synthesis of triacylglycerol is not feedback
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inhibited. Correct Answer: The synthesis of glycerophospholipids is feedback inhibited by a glycerophospholipid while the synthesis of triacylglycerol is not feedback inhibited. Question 5 5 out of 5 points Which of the following statements is true concerning plasma lipoproteins? Selected Answer: All plasma lipoproteins have a nonpolar core enriched with varying amounts of cholesterol ester, triacylglycerol, and lipid soluble vitamins. Correct Answer: All plasma lipoproteins have a nonpolar core enriched with varying amounts of cholesterol ester, triacylglycerol, and lipid soluble vitamins.
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