They are the energy currency in metabolic transactions, the essential chemical links in the response of cells to hormones and other extracellular stimuli, and the structural components of an array of enzyme cofactors and metabolic intermediates.

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.

Nucleotides have a variety of roles in cellular metabolism.

A. 核苷酸
B. 核苷
C. 核膜
D. 核酸

They are the constituent of nucleic acids: deoxyribonucleic acid and ribonucleic acid, the molecular repositories of genetic information.

A. 核苷酸
B. 核酸
C. 脱氧核糖核酸
D. 核糖核酸

The structure of every protein, and ultimately of every biomolecule and cellular component, is a product of information programmed into the nucleotide sequence of a cell's nucleic acids.

A. 程序化
B. 编入
C. 编程
D. 编码

The ability to store and transmit genetic information from one generation to the next is a fundamental condition for life.

A. 传输
B. 传达
C. 遗传
D. 传递

The amino acid sequence of every protein in a cell, and the nucleotide sequence of every RNA, is specified by a nucleotide sequence in the cell's DNA.

A. 指明
B. 详细说明
C. 决定
D. 规定

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

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