下列关于细胞核的叙述正确的是( ) A.真核细胞的细胞核控制着细胞

下列关于细胞核的叙述正确的是(  )

A.真核细胞的细胞核控制着细胞的代谢和遗传

B.在电镜下观察原核细胞,可以看到细胞核的主要结构有核膜、核仁和染色体

C.真核细胞的核膜上有核孔,脱氧核糖核酸等大分子物质可以通过核孔进入细胞质

D.细胞核内的液体叫做细胞液

答案

【解析】A。细胞核是细胞代谢和遗传的控制中心;原核细胞没有以核膜为界限的细胞核,不存在核膜、核仁和染色体;核孔是大分子物质出入细胞核的通道,DNA分子不能出细胞核;细胞核内的液体是核液,植物细胞中液泡内的液体是细胞液。

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