24. Urea cycle is used for the synthesis of__________.
(A) lysine
(B) arginine
(C) tryptophan
(D) phenylalanine
(E) purine

1. What type of glycosidic linkage does a sucrose molecule (as shown below) have? (A) β-1,3 (B) β-1,2 (C) α-1,3 (D) α-1,2 (E) α-1,4

2. Which of the following method can be used to determine protein concentration without a protein reference? (A) BCA (B) Beer-Lambert law (C) SDS-PAGE (D) Bradford assay (E) Western blotting

3. An enzyme's specificity can be due to: (A) the ratio of catalyzed rate to the uncatalyzed rate of reaction. (B) metabolic modulators. (C) molecular recognition based on structural complemnentarity. (D) amount of substrate available. (E) amount of enzyme produced by the cell.

4. The dehydrogenase enzymes facilitate the direct transfer of hydride anion. Which of the following coenzymes is required for this transfer? (A) biotin (B) folic acid (C) lipoic acid (D) TPP (E) NAD+

5. Which statement below about contrasting Hb and Mb is false? (A) Hb shows sigmoidal, whereas Mb shows hyperbolic oxygen saturation curves. (B) Hb shows cooperativity, whereas Mb does not. (C) Mb binds O2 more tightly than Hb. (D) Oxygen binds to a ferrous ion in both proteins. (E) Mb-oxygen binding is dependent on physiological changes in pH, whereas Hb-oxygen binding is not.

6. In the conversion of glucose to pyruvate, how many of the actual steps involve electron transfer? (A) I (B) 2 (C) 3 (D) 4 (E) None

7. Which of the following statements regarding citric acid cycle is false? (A) The immediate electron acceptor for the majority of the oxidative reactions of the citric acid cycle is coenzyme A. (B) Isocitrate dehydrogenase and the a-ketoglutarate dehydrogenase complex catalyze oxidative decarboxylation reactions in the citric acid cycle. (C) Pantothenic acid is used by the pyruvate dehydrogenase complex as a cofactor during oxidative decarboxylation. (D) Succinate dehydrogenase is the only membrane-bound enzynne in the citric acid cycle. (E) None is false.

8. Which of the following statements about glycogen metabolism is correct? 1. Glycogen is mainly found in liver and muscle. 2. The average chain length of the branches in glycogen is 25 glucose residues. 3. Glycogen phosphorylase cleaves the a(1→6) bonds in glycogen.  4. Glycogen phosphorylase responds differently to allosteric effectors in its phosphorylated and dephosphorylated forms. (A) 1, 2 and 3 are correct. (B) 1, 3 and 4 are correct. (C) 2 and 3 are correct. (D) 1 and 4 are correct. (E) All are correct.

9. In the citric acid cycle there are eight reactions steps. Which of the following enzymes catalyzes the release of carbon dioxide? (A) Malate dehydrogenase (B) Citrate synthase (C) Aconitase (D) Isocitrate dehydrogenase (E) Succinyl-CoA synthetase

10. Cofactors usually play an important role in enzyme catalysis. Which enzyme requires lipoic acid as a coenzyme? (A) Isocitrate dehydrogenase (B) Malate dehydrogenase (C) Succinyl-CoA synthetase (D) Succinate dehydrogenase (E) Aconitase

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#132802

114年 - [無官方正解]114學年度學士後獸醫學系招生試題-生物化學#131167

114年 - [無官方正解]114 台灣綜合大學系統_學士班轉學生聯合招生考試：生物化學#129347

114年 - [無官方正解]114 國立臺灣大學_轉學生招生考試試題：生物化學概論#128196

114年 - 114 台灣聯合大學系統_碩士班招生考試試題_化學類：生物化學#126447

114年 - 114 國立成功大學_碩士班招生考試試題：生物化學#126226

114年 - 114 國立臺灣大學_ 碩士班招生考試試題：生物化學(C)#125975

114年 - 114 國立臺灣大學_ 碩士班招生考試試題：生物化學(A)#125974