下列有关原核细胞与真核细胞的叙述中,错误的是(   ) A.蓝藻和水

下列有关原核细胞与真核细胞的叙述中,错误的是(   )

A.蓝藻和水绵细胞中都含有核糖体

B.它们都有染色体,存在基因

C.最大的区别是原核细胞没有核膜包围的典型细胞核

D.原核细胞的细胞膜化学组成和结构与真核细胞相似

答案

B

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