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

複選題28. Please choose the correct answer(s) from the following descriptions:  1. Fructose is not reducing sugar.  2. The α-D-glucose and β-D-glucose interconvert in aqueous solution. 3. GIc(β1→4)Glc could be draw as the following figure.  4. The sugar drawn above is a maltose. 5. Mannose is a C2 epimer of galactose. (A) Only land 2 are correct. (B) 1, 3, and 4 are correct. (C)1 and 5 are correct.(D) 2, 3, and 4 are correct. (E) Only 5 is incorrect.

29. A protein mixture contains proteins A, B, and C (Protein A: homodimer M. = 140,000, pI 8； Protein B: Mr = 113,000, pI 5； Protein C: Mr = 13,000, pI 9). 1. Sandy used SDS-PAGE to separate theses three proteins. The sequence of the protein bands shown in gel from top to bottom is A-B-C. 2. Simon dissolved the protein mixture in 20 mM phosphate buffer (pH 7) and loaded to a cation exchange column equilibrated with the same buffer. Protein B could not bind to the column.  3. Samuel dissolved the protein mixture in 20 mM phosphate bufter (pH 7) and loaded to an anion exchange column equilibrated with the same buffer. Only protein A and C could bind to the column. 4. Silvia used a gel filtration column to separate them, C will be eluted first.  5. Sophie used 2-Dimensional electrophoresis to separate them. The relative positions of these three proteins is like the image below.  (A) 1, 2, and 5 are correct. (B) 2 and 4 are incorrect. (C) 1, 3, and 4 are incorrect.(D) Only 2 is correct.  (E) Only land 3 are incorrect.

30. The following figure describes the torsion angle of the residue i in a protein. What does the figure tell you? (A) It is Φ angle -90 degrce. (B) It isωangle +90 degree. (C) It is Φ angle t90 degree. (D) It is φ angle -90 degree. (E) It is Φ angle +90 degree

31. Which of the following is not correct concerning cooperative binding of a ligand to a protein? (A) It is usually a form of allosteric interaction. (B) It is usually associated with proteins with multiple subunits. (C) It results in a sigmoidal binding curve. (D) It rarely occurs in enzymes. (E) It results in a nonlinear Hill Plot.

32. In the following diagram of the first step in the reaction catalyzed by the protease chymotrypsin, the process of general base catalysis is illustrated by the number__________ , and the process of covalent catalysis is illustrated by the number ____________.(A) 3；2 (B) 1；3 (C) 2；3 (D) 2； 1

33. The steady state assumption, as applied to enzyme kinetics, implies: (A) the ES complex is formed and broken down at equivalent rates. (B) the enzyme is regulated. (C) Km=Ks. (D) the Km is equivalent to the cellular substrate concentration. (E) the maximum velocity occurs when the enzyme is saturated. 

34. Which one of the following statements is correct? 1. Conversion of ethanol to acetaldehyde is a two-electron oxidation.  2. FAD is a stronger reducing reagent than NAD+.  3. There is entropy loss when ADP is phosphorylated.  4. Creatine phosphate is a high-energy-bond containing molecule.  5. NAD+ is the electron acceptor during in the conversion of 3-phosphoglycerate to 1,3-bisphosphoglycerate. (A) 1, 2, and 3 are correct. (B)2, 3, and 4 are correct. (C)1, 3, and 4 are correct. (D) 1,3, 4, and 5 are correct. (E)2, 3, 4, and 5 are correct.

35. Which of the following statements is incorrect? (A) 2, 3, and 5 are incorrect. (B) 1, 3, and 4 are incorrect. (C) 1,3, and 5 are incorrect. (D) All are incorrect. (E) None is incorrect.

36. Which statement regarding glycogen breakdown is correct?  1. Cleavage of glycogen terminal glucose is catalyzed by glycogen phosphorylase.  2. The breaksdown of glycogen to generate Glucose-6-phosphate needs no ATP. 3. Transferase activity in glycogen debranching enzyme catalyzes the transfer of shorter α(1→)6 linked glucose chain to another o(1-)6 linked glucose chain for further cleavage reaction. 4. Glucosidase activity in glycogen debranching enzyme catalyzes the cleavage ofα(1→6) linked glucose for complete breaking down the branch in glycogen (A) 1, 2, and 3 are correct. (B) 2, 3, and 4 are correct. (C) 1, 2, and 4 are correct. (D) All are correct. (E) None is correct.

37. Which one of the following statements is incorrect? (A) P-type ATPase transporter is inhibited by vanadate. (B) Cyanide (CN-) blocks the lactose transporter in E.coli. (C) Tetradotoxin impairs voltage-gated Na+ channels. (D) Statin competes with acetyl Co-A. (E) Aspirin inhibits COX-2. pyruvatc

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 - 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

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