题目内容

A segment of a DNA molecule that contains the information required for the synthesis of a functional biological product, whether protein or RNA, is referred to as a gene.

A. 分裂
B. 时间段
C. 部分
D. 片段

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The storage and transmission of biological information are the only known functions of DNA.

A. 播送
B. 传递
C. 传输
D. 变速器

Nucleotides have three characteristic components: a nitrogenous base, a pentose, and a phosphate.

A. 核苷酸
B. 含氮碱基
C. 戊糖
D. 磷酸基

The molecular without the phosphate group is called a nucleoside.

A. 磷酸团
B. 磷酸盐组
C. 皮膜化成
D. 磷酸基

metabolism _____________。

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