嘌呤霉素(puromycin)
参考答案:
通过整合到生长着的肽链,引起肽链合成提前终止来抑制多肽链合成的一种抗生素。
For teenagers,there are always too many rules that are expected________.[ ]
A.to obey
B.to be obeyed
C.obeying
D.obeyed
吹苯塔蒸馏属()蒸馏。
A.共沸
B.减压蒸馏
C.间歇
D.水蒸汽