题目内容

氯素素的作用机制是()

A. 与原核生物大亚基结合
B. 与原核生物小亚基结合
C. 抑制氨基酰-tRNA进入核蛋白体A位
D. 抑制转肽酶活性
E. 抑制氨基酰-tRNA合成酶的活性

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简述参与蛋白质合成的物质。

说明蛋白质翻译后有哪些加工和修饰?

什么是靶向输送?什么是信号肽假说?

In terms of writing device, which of the following sentence does not employ parallelism?

A. Clear writing should be a major concern both of writers and readers.
B. The Writing Center needs tutors who are ambitious, self-motivated, and who are dedicated.
C. That small group of villainous men who plan, organize , and launch this cataract of horrors upon mankind.
D. She was up in court a couple of times—drunk and disorderly.

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