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試卷名稱：111年 - 111 國立中正大學_碩士班招生考試_生物醫學科系生物醫學：生物化學#125346
年份：111年
科目：研究所、轉學考(插大)◆生物化學
12. Enzyme X exhibits maximum activity at pH = 6.9. X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4. One likely interpretation of this pH activity is that:
(A) a Glu residue on the enzyme is involved in the reaction.
(B) a His residue on the enzyme is involved in the reaction.
(C) the enzyme has a metallic cofactor.
(D) the enzyme is found in gastric secretions.
(E) the reaction relies on specific acid-base catalysis.
