7. Which one is an ω-6 fatty acid?
(A)
(B)
(C)
(D)
(E)

8. Which one is the basic unit for lipid synthesis? (A)Malonyl Co-A (B) Choline (C)Phosphatic acid(D) Glycerophospholipid (E) Squalene

9. Which one regarding the compartmentalization of lipid metabolism is incorrect? (A) Fatty acid oxidation occurs in the mitochondria. (B) Ketone body synthesis takes place in the mitochondria. (C) Late stages of sterol synthesis take place in the ER. (D) Fatty acid synthesis occurs in the cytosol. (E) Acetyl-CoA is produced in the cytosol.

10. Which one is a secondary active transporter? (B) SERCA punp (A) GLUTI (C) Acetylcholine receptor (D) Lactose H+transporter (E) Caveolin

11. Which one is involved in HDL-mediated reverse cholesterol transport to the liver? (A)ABCA I(B) Acyl-CoA cholesterol acyl transferase (ACAT) (C) Sterol regulatory element-binding proteins (D) HMG-CoA reductase (E) Acetyl-CoA Carboxylasc

12. Starch is a high molecular weight polymer of D-glucose in α1→4 linkage. It is synthesized by starch synthase, which transfers glucose residues from _______to preexisting starch molecules. (A) glucose 6-phosphate (B) ATP-glucose (C) ADP-glucose (D) sucrose (E) glucose 1-phosphate

13. Which of the following descriptions about the melting temperatures of the fatty acids are correct? (A) 1,3, and 4 only (B) 3,4, and 6 only (C) 2,3, and 5 only (D) 3 and 6 only (E) 1 and 4 only

14. Oxidative stress results when the superoxide anion () is formed as a side reaction of mitochondrial electron transport. This oxygen anion radical is made nontoxic by the action of enzymes in the mitochondrial matrix. Which of the following enzymes acts on two , converting then to one molecule of water and one of H2O2? (A) Glutathione reductase. (B) Superoxide hydroxylase. (C) Glutathione peroxidase. (D) Glutathione. (E) Superoxide dismutase.

15. The relative concentrations of ATP and ADP control the celiular rates of: (A)glycolysis. (B) oxidative phosphorylation. (C) pyruvate oxidation. (D) the citric acid cycle. (E) All of the above.

16. Some hormones are derived from amino acids； for example, catecholamines are derived from______ while serotonin is derived from______ . (A) tyrosine； tryptophan (B) tryptophan； lysine (C) tyrosine； histidine (D) tryptophan； arginine (E) histidine； lysine

17. Which of the following is not true during fasting? (A) During fasting, the liver maintains blood glucose levels. (B) Amino acids from muscle protein are a major carbon source for the production of glucose by the pathway of gluconeogenesis. (C) As amino acid carbons are converted to glucose, the nitrogens are converted to urea. Thus, the urinary excretion of urea is high during fasting. (D) As fasting progresses, however, the brain begins to use ketone bodies, sparing blood glucose. (E) Only muscle proteins are mobilized for energy requirement.

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