问题
单项选择题 A1/A2型题
下例何种物质没有酶的催化功能（）
A.AST
B.Mb
C.LD
D.CK
E.CK-MB
答案
参考答案：B
解析：本题考查选项中物质是否具有酶活性，Mb是肌红蛋白，在肌肉中有运输氧和储氧功能，肌红蛋白不是酶，没有酶催化活性。
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下例何种物质没有酶的催化功能（）
A.AST
B.Mb
C.LD
D.CK
E.CK-MB
参考答案：B
解析：本题考查选项中物质是否具有酶活性，Mb是肌红蛋白，在肌肉中有运输氧和储氧功能，肌红蛋白不是酶，没有酶催化活性。
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