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Gaokao Biology Practice Question

下列关于细胞衰老和凋亡的叙述, 正确的是

  1. A.细胞凋亡是受基因调控的
  2. B.细胞凋亡仅发生于胚胎发育过程 中
  3. C.人体各组织细胞的衰老总是同步的
  4. D.细胞的呼吸速率随细胞衰老而不断增大

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