20. The esterification of the carbon three position of diacylglycerol requires a
ID: 1043539 • Letter: 2
Question
20. The esterification of the carbon three position of diacylglycerol requires acyl transferase which forms triacylglycerol (triglyceride). True or False 21. Which of the following statements about Step 2 of cholesterogenesis is INCORRECT a. Consumes NADPH to form isoprene units b. Production of isoprenes starts with the phosphorylation of mevalonate c. Three ATP in total are expended to make an activated isoprene d. Production of isoprene units involves a decarboxylation step. production 22. The pentose phosphate pathway is a critical source of NADH for lipogenesis. True or False 23. Circle the CORRECT statement about brown fat thenmogenesis a. Makes heat through the futile cycling of ATP. b. Involves the induction of proton leaks. c. Requires the oxidation of cholesterol. d. Is the most important storage site for fat. e. Relies heavily on anaerobic metabolism to maintain the body's temperature. 24. The strong correlation between fructose and obesity is due to its unregulated breakdown of fiructose directly to glycerol and acetyl-CoA. TRUE or FALSE. 25. ApoE a. Is required to activate 1 b. Activates clearance of chylomicron remnants c. Activates the esterification of glycerol with free fatty acids. d. A degradation product of ApoB-100 e. The only apolipoprotein cleared by muscle. 5Explanation / Answer
20) True: Acyl transferase specifically Diglyceride acyltransferase DGAT is used which reacts with the "-OH" group present on the third carbon of diacylglycerol to form ester. This esterification converts diacylglycerol to triacylglycerol or triglyceride.
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