21. Which of the following fatty acid is the essential fatty acid?

(A) Palmitic acid

(B) Stearic acid

(C) Linolenic acid

(D) Arachidonic acid

(E) None of the above

22. The primary activation of triacylglycerol mobilization in adipocytes is through phosphorylation of the enzyme ______.(A) perilipin(B) hormone sensitive lipase(C) adipose triglyceride lipase(D) monoacylglycerol lipase(E) none of the above

23. Which of the following represents the correct sequence of events in a cycle of ẞ-oxidation beginning with a saturated fattyacyl-CoA?(A) Hydration, FAD-coupled oxidation, -coupled oxidation, thiolytic cleavage(B) FAD-coupled oxidation, hydration, -coupled oxidation, thiolytic cleavage(C) FAD-coupled oxidation, -coupled oxidation, hydration, thiolytic cleavage(D) NAD+-coupled oxidation, FAD-coupled oxidation, hydration, thiolytic cleavage(E) NAD+-coupled oxidation, hydration, FAD-coupled oxidation, thiolytic cleavage

24. Which of the following types of tissues can use glucose and ketone bodies as sources of fuel?(A) Skeletal muscle (B) Cardiac muscle (C) Liver (D) Brain (E) Adipose

25. Which of the following is used to activate phosphatidic acid for conversion to various phospholipids?(A) ATP (B) UTP (C) GTP (D) CTP (E) TTP

26. The hormone ______  induces lipolysis, whereas the hormone ______ inhibits the process.(A) epinephrine; adrenocorticotropic hormone(B) glucagon; insulin(C) insulin; norepinephrine(D) glucagon; epinephrine(E) epinephrine; glucagon

27. How many rounds of ẞ-oxidation would be required for a 18-C fatty acyl chain to be degraded to acetyl-CoA?(A) 16 (B) 8 (C)7 (D) 15 (E) None of the above

28. What is the committed step in fatty acid synthesis?(A) Binding of the fatty acyl group to the acyl carrier protein(B) Synthesis of malonyl CoA(C) Transacylase reaction(D) The formation of acetoacetyl-AСР(E) None of the above

29. Which of the following is an irreversible form of inhibition?(A) Competitive inhibitor(B) Suicide inhibitor(C) Noncompetitive inhibitor(D) Uncompetitive inhibitor(E) None of the above

30. What are the expected changes in kinetics in the presence of a competitive inhibitor?(A) decreases, appears to decrease(B) does not change, арpears to increase(C) decreases, appears to increase(D) does not change, appears to decrease(E) decreases, does not change

1. 下列何者為「蘇美人」發明的文字？(A) (B) (C) (D)

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