17. Which of the following is the regulatory step in cholesterol synthesis?
(A) HMG-CoA synthase
(B) HMG-CoA lyase
(C) HMG-CoA reductase
(D) squalene synthase
(E) squalene epoxidase

17.Which of the following is the regulatory step in cholesterol synthesis?(A) HMG-CoA synthase(B) HMG-CoA lyase(C) HMG-CoA reductase(D) squalene synthase(E) squalene epoxidase

17) Which of the following is the regulatory step in cholesterol synthesis?(A) HMG-CoA synthase(B) HMG-CoA lyase(C) HMG-CoA reductase(D) squalene synthase(E) squalene epoxidase

18. In the citric acid cycle, acetyl-CoA reacts with ________ to produce _________. (A) fumarate； ᵦ-ketoglutarate (B) oxaloacetate； citrate (C) citrate； isocitrate (D) succinyl-CoA； oxaloacetate (E) malate； cis-aconitate

19. Which of the following correctly identifies key elements present on the exterior of Gram-negative (GN) and Gram-positive (GP) bacteria? (A) GN: single lipid bilayer； GP: two lipid bilayers (B) GN: single peptidoglycan layer； GP: multiple peptidoglycan layers (C) GN: extensively crosslinked peptidoglycans； GP: uncrosslinked peptidoglycan (D) GN: contains both N-acetylmuramic acid and N-acetylglucosamine； GP: contains only N-acetylmuramic acid (E) none of the above

20. How many stereoisomers would be expected from a ketohexose? (A) 4 (B) 8 (C) 16 (D) 32 (E) 64

21. Which of the following does not specifically cause a membrane to be more rigid or fluid, but rather causes the Tm to occur over a greater range? (A) increasing the content of unsaturated fatty acids (B) raising the temperature (C) increasing the cholesterol content (D) decreasing the phosphatidylcholine content while increasing the phosphatidylethanolamine content (E) all of the above

22. Movement of ions across a cell membrane by the Na/K ATPase is best described as ________. (A) sodium moved outside to inside, potassium inside to outside (B) sodium moved inside to outside, potassium outside to inside (C) sodium moved inside to outside, potassium inside to outside (D) sodium moved outside to inside, potassium outside to inside (E) none of the above

23. Which of the following formulas would be a carbohydrate (A) C5H12O5 (B) C4H8O6 (C) C6H10O6 (D) C3H8O3 (E) C6H12O6

24. Which enzyme catalyzes the primary regulation site of glycolysis? (A) hexokinase (B) phosphofructokinase-1 (C) glyceraldehyde-3-phosphate dehydrogenase (D) phosphoglycerate kinase (E) pyruvate kinase

25. Which of the following shows the overall equation for the light reactions? (A) 2 H2O + 1 NADP+ → 1 H+ + O2 + 1 NADPH, requires 4 photons (B) 2 H2O + 1 NADP+ → 1 H+ + O2 + 1 NADPH, requires 8 photons (C) 2 H2O + 2 NADP+ → 2 H+ + O2 + 2 NADPH, requires 4 photons (D) 2 H2O + 2 NADP+ → 2 H+ + O2 + 2 NADPH, requires 8 photons (E) 2 H2O + 2 NADP+ → 2 H+ + O2 + 2 NADPH, requires 16 photons

115年 - [無官方正解]115 國立清華大學_碩士班考試入學試題_生命科學暨醫學院甲組(生物與醫學科學組)﹕生物化學#142711

115年 - [無官方正解]115 國立臺灣大學_轉學生招生考試試題：生物化學概論#142642

115年 - [無官方正解]115 台灣聯合大學系統_碩士班招生考試_化學類：生物化學#139667

115年 - [無官方正解]115 國立臺灣大學_ 碩士班招生考試試題：生物化學(C)#137643

115年 - [無官方正解]115 國立臺灣大學_ 碩士班招生考試試題：生物化學(A)#137641

115年 - [無官方正解]115 國立臺灣大學_ 碩士班招生考試試題：生物化學(一般生物化學)#137622

115年 - 115 國立臺灣大學_ 碩士班招生考試試題：生物化學(B)#137619

114年 - [無官方正解]114 國立中興大學_碩士班招生考試試題_生物醫學研究所：生物化學#139094

114年 - [無官方正解]114 國立中正大學_碩士班招生考試試題_生物醫學科學系：生物化學#138415

114年 - [無官方正解]114 國立高雄大學_研究所碩士班招生考試試題_生命科學：生物化學#137690