8. What is the net ATP yield from the complete oxidation of one myristate to CO₂ and H₂O?
(A) 106,
(B) 94,
(C) 92,
(D) 108,
(E) 120.

1. In transmembrane proteins, which amino acid is preferred at the membrane-water interface? (A)W, (B) E, (C) K, (D) L, (E) A.

2. Which transport system does not require energy input to transport substrates? (A)Ca+2-ATPase, (B) bacteriorhodopsin (C) ABC transporters, (D)potassium channel, (E) sodium pump.

3. Which of the following statement about the asymmetric structures of biological membranes is FALSE? (A) Membrane proteins display transverse and lateral asymmetry, (B) The lipids of the membrane exhibit lateral heterogeneity and transverse asymmetry, (C) The lipid composition is different from organelles to organelles, (D) The asymmetric membrane structures are maintained by transporters, (E) Acidic phospholipids are enriched in the outer leaflet.

4. Which amino acids are negatively-charged at neutral pH? (A)A, C, (B) D, E, (C) L, I, (D) K, R, (E) N, Q.

5. The rate-limiting step in glycogen catabolism is catalyzed by glycogen phosphorylase, which is activated by_______? (A) ATP, (B) ADP, (C) glucose-6-phosphate, (D) phosphorylation, (E) acetylation.

複選題6. The biosynthesis of_______ intermediates? (A) Pro, (B) Tyr, (C) His, (D) Phe, (E) Lys. is connected to purine biosynthesis by common

7. HMG-CoA reductase is the key regulatory site in cholesterol synthesis. Which of the following statement about the regulatory mechanisms of HMG-CoA reductase is TRUE? (A) Phosphorylation by cAMP-dependent kinase activates HMG-CoA reductase, (B) A high AMP:ATP ratio leads to activation of HMG-CoA reductase, (C) High cholesterol level increases the half-life of HMG-CoA reductase, (D) High cholesterol level increases HMG-CoA reductase gene expression, (E) HMG-CoA reductase phosphatase can activate HMG-CoA reductase.

9. How does fructose-2,6-bisphosphate regulate gluconeogenesis? (A) It inhibits phosphofructokinase to stimulate gluconeogenesis, (B) It inhibits fructose-1,6-bisphosphatase to reduce gluconeogenesis, (C) It activates Pyruvate kinase to reduce gluconeogenesis, (D) It activates phosphofructokinase to stimulate gluconeogenesis, (E) It activates pyruvate carboxylase to stimulate gluconeogenesis.

10. Acetate units for fatty acid synthesis are activated by formation of _______.(A)Malonyl-CoA, (B) Acetyl-CoA, (C) Butyryl-CoA, (D) Malonyl-CoA and Acetyl-CoA, (E) Acetyl-CoA and Butyryl-CoA.

11. Which of the following statement about the mitochondrial electron transport chain is TRUE? (A) Complex I transfers electrons from FADH2 to ubiquinone, (B) The Q cycle mediated by Complex II reduces cytochrome c, (C) A single catalytic cycle of Complex III transports four protons from the intermembrane space to the matrix, (D) Complex IV uses electrons from cytochrome c to reduce O2 to H2O, (E) Electrons move from more positive to more negative reduction potentials.

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