题目内容

Moreover, proteins exhibit enormous diversity of biological function and are the most important final products of the information pathways.

A. 展览
B. 提出
C. 显示
D. 展出

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Proteins are the molecular instruments through which genetic information is expressed.

A. 工具
B. 仪器
C. 乐器
D. 器械

Among these protein products, the enzymes are the most varied and specialized.

A. 专化的
B. 特化的
C. 专一的
D. 特殊的

Virtually all cellular reactions are catalyzed by enzymes.

A. 促进
B. 催化
C. 刺激
D. 激励

All proteins, whether from the most ancient lines of bacteria or from the most complex forms of life, are constructed from the same ubiquitous set of 20 amino acids, covalently(共价的) linked in characteristic linear sequences.

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