66. The kcat/kM [(mol/L)-1s-1] of enzyme X for substrate A, B, C, and D are 0.13,0.036, 3000 and 100, respectively. Which substrate is best for enzyme X?
(A) A
(B) B
(C) C
(D) D

67. What is the direction for DNA and RNA synthesis, respectively? (A) 5’ to 5’ and 5’ to 5’ (B) 5’ to 3’ and 5’ to 3’ (C) 5’ to 5’ and 5’ to 3’ (D) 5’ to 3’ and 5’ to 5’

68.Nucleic acids absorb ultraviolet light principally because of their aromatic base components. Which kind of nucleic acid below absorbs UV most efficiently? (A) RNA in an A-form helix (B) RNA in a B-form helix (C) single-stranded DNA (D) double-stranded DNA

69.The partial structure of a polysaccharide is listed below. Which of the following glycosidic linkage is NOT shown in the molecule below? (A) α-1,4-glycosidic linkage (B) α-1,6-glycosidic linkage (C) β-1,6-glycosidic linkage (D) None of the above

70.Three structures are listed below. Molecule A and B are: (A) enatiomers (B) epimers (C) mirror-image stereoisomers (D) none of the above

71.The figure shown below is a ball-and-stick representation of the crystal structure of a lipid (Note that the H atoms, which are often not evident in X-ray crystallography, are not shown). This lipid is: (A) linolenic acid (B) palmitic acid (C) triacylglycerol (D) phosphatidylethanolamine

72.The structure of a dipeptide is shown below. Which bond indicates the peptide bond? (A) 1 (B) 3 (C) 1 and 3 (D) none of the above

73.The concept of "induced fit"for enzyme activity refers to the fact that: (A) enzyme-substrate binding induces movement along the reaction coordinate to the transition state (B) enzyme-substrate binding induces an increase in the reaction entropy, thereby catalyzing the reaction (C) substrate binding may induce a conformational change in the enzyme, which then brings catalytic groups into proper orientation (D) when a substrate binds to an enzyme, the enzyme induces a loss of water (desolvation) from the substrate

74.Several oxygen dissociation curves are listed in the figure below.  If curve #2 indicates the purified hemoglobulin in a solution containing physiological concentration of CO2 and BPG at pH 7.0, then which curve should represent the oxygen dissociation curve when the pH increases? (A) 1 (B) 2 (C) 3 (D) 4

75.By adding SDS (sodium dodecyl sulfate) during the electrophoresis of proteins, it is possible to: (A) measure an enzyme's specific activity (B) preserve a protein's native structure and biological activity (C) determine a protein's isoelectric point (D) separate proteins exclusively on the basis of molecular weight

76.After one hour of electrophoresis in an agarose gel at a field strength of 5 volts/cm, one DNA fragment migrated 10 cm while another DNA fragment migrated only 6 cm. From this information you can conclude: (A) that the DNA that migrated 10 cm is larger than the DNA that migrated 6 cm (B) that the DNA that migrated 10 cm is smaller than the DNA that migrated 6 cm (C) nothing about the sizes of the DNA fragments without information about the migration of DNA size standards (D) that the experiment failed

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