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以大肠杆菌T系噬菌体为例,简要叙述病毒的繁殖过程。
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以大肠杆菌T系噬菌体为例,简要叙述病毒的繁殖过程。
时间:2021-07-18 00:01
关键词:
环境工程
专升本
环境微生物学
环境微生物
答案解析
(1)吸附:病毒吸附于敏感细菌表面的受体上特定部位;(1分)<br/>(2) 侵入:噬菌体通过水解破坏细胞壁,DNA进入。(1分)<br/>(3)复制与聚集:细菌自身的DNA被破坏,病毒借助于细菌的合成机构,为自己工作,即复制噬菌体的DNA和其他结构。病毒的DNA和蛋白质等在细菌体内装配成一个完整的大肠杆菌噬菌体。(2分)<br/>(4)宿主细胞裂解和成熟噬菌体粒子的释放:噬菌体粒子成熟后,导致宿主细胞破裂,释放出噬菌体。(1分)
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以大肠杆菌T系噬菌体为例,简要叙述病毒的繁殖过程。
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