论述蛋白质的合成过程。 -题库考试答案搜索网

论述蛋白质的合成过程。

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2021-07-18 00:01

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正确答案

共分成四个阶段:
(1)DNA的复制,细胞将某特定段DNA链进行复制。(2分)
(2)mRNA的转录,DNA双链打开后,以单链为模板,按照碱基配对原则复制RNA。将DNA上的信息转给RNA。(2分)
(3)翻译,由tRNA完成。通过反密码子与mRNA密码子的互补,tRNA破译氨基酸的密码,进而将所需氨基酸送到核糖体处。(3分)
(4)蛋白质的合成,特定的碱基顺序密码送到核糖体,氨基酸按照顺序连接在一起,在酶的作用下形成多肽链,进而形成蛋白质,最终将遗传信息表达出来。(3分)

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标签：环境工程专升本环境微生物学环境微生物

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