人的肝细胞内可由DNA控制合成的物质是 A.生长激素       B.胰

人的肝细胞内可由DNA控制合成的物质是

A.生长激素       B.胰岛素     C.呼吸酶       D.性激素

答案

C  


解析:

此题考查的是DNA控制物质合成及基因的选择性表达过程,属于考纲分析判断层次。题目中的肝细胞中存在所有基因都是基因是选择性表达,生长激素在垂体细胞中表达,胰岛素在胰岛B细胞中表达,呼吸酶在所有细胞中都表达,性激素在性腺中表达。

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