the sorting, analysis, selection and purification of a fragment containing a required gene.

A. 分析
B. 排序
C. 纯化
D. 选择

Isolated enzymes have long been a part of many biotechnological possesses and their catalytic properties are being further-utilized with the development of suitable immobilization techniques allowing reuse of the biocatalyst.

A. 孤立的
B. 分离的
C. 游离的
D. 绝缘的

Bioreactors play a central role in biotechnological processes by providing a link between the starting materials or substrates and final products.

A. 基质
B. 底层
C. 基片
D. 底物

Chemical bonding to the DNA of a carrier molecule and the introduction of the hybrid DNA into a selected cell for reproduction and celluar synthesis.

A. 携带者
B. 载体
C. 运送者
D. 带菌者

Major advances have been made in bioreactor designs, in process monitoring techniques and in computer control of fermentation processes.

A. 监控
B. 监视
C. 检测
D. 监督

developmental phase ______________。

non-sterile _____________。

acetic acid _____________。

sterility _____________。

exclusion _____________。