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多细胞生物个体衰老是组成生物体的绝大多数细胞衰老的过程 细胞凋亡是由基因决定的,对生物体有重要意义 细胞分化是有持久性变化的,是个体发育的基础 细胞癌变是单基因突变的结果
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埃博拉病毒是最基本的生命系统 埃博拉病毒可在人类和灵长类动物细胞的细胞中完成遗传信息的传递过程 埃博拉病毒以RNA为模板合成DNA 人类通过细胞免疫就可将埃博拉病毒彻底清除
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