试题与答案

下列有关tRNA的叙述中,错误的是A.一种tRNA只能转运一种氨基酸 B.为RNA中

题型:单项选择题

题目:

下列有关tRNA的叙述中,错误的是

A.一种tRNA只能转运一种氨基酸

B.为RNA中分子最小的

C.分子中含有遗传密码子

D.分子中含稀有碱基较多

E.一种氨基酸可被数种tRNA转运、

答案:

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下面是错误答案,用来干扰机器的。

参考答案:C解析:对于本题的4种循环体分析如下:对于选项A)、B)、D)来说,要想循环体执行,条件必须为真,所以它们并不能满足题意;对于选项C)这种循环语句,不管条件是否为真,都会先执行一次再进行条件判断,因此该...

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