题干

下图为人体细胞的分裂、分化、衰老和死亡过程的示意图,图中①—⑥为各个时期的细胞,a~c表示细胞所进行的生理过程。据图分析,下列叙述正确的是

A:与①相比,②的表面积与体积的比值增大,与外界环境进行物质交换的能力增强

B:⑤与⑥的基因型相同,蛋白质的种类也相同

C:若⑤⑥已失去分裂能力,则其细胞内遗传信息的流动方向为DNA→RNA→蛋白质

D:细胞的衰老与死亡就会引起人体的衰老与死亡

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C

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