在酶分子表面由必需基团组成的与酶活性有关的一个区域称为
A. 结合域
B. 手性中心
C. 酶的活性中心
D. 变构调节中心
E. 化学修饰中心
查看答案
关于酶促反应特点的叙述,正确的是
A. 酶对底物无选择性
B. 酶的活性不受任何因素的调节
C. 酶的活性稳定
D. 与一般催化剂催化效率类似
E. 酶的活性不稳定,易受温度及酸碱度等因素影响
Task One: People are talking about machines andappliances. Listen to match the productsin the first groupwith the features in the second group.
TaskTwo: Listen to it again. Are these statements true or false? checkthe correct answer (判断题和连线题使用了同一个音频,请先做连线题).Youshouldn't put it near a window.
A. 对
B. 错
You should keep it outside the case when you carry it.
A. 对
B. 错