问题
单项选择题
Na+泵的特点是
A.可造成离子势能的储备
B.腺苷酸环化酶提供能量
C.泵出Na+和泵入K+交替进行
D.泵出K+和泵入N+的比例是2:3
E.Na+泵是膜上的腺苷酸环化酶
答案
参考答案:A
Na+泵的特点是
A.可造成离子势能的储备
B.腺苷酸环化酶提供能量
C.泵出Na+和泵入K+交替进行
D.泵出K+和泵入N+的比例是2:3
E.Na+泵是膜上的腺苷酸环化酶
参考答案:A
从方框中提供的七个选项中选出五个,有两个为多余项。 | |
Joe: Sally. 1________ Sally: Sure, Joe Joe: 2________ Sally: My birthday party is October 5th. Joe: OK. 3________ Sally: The basketball game? Oh, it's October 2nd. Joe: Good. And, um. 4________ Sally: The school trip is September 26th and 27th. Joe: 5________ Sally: Oh, that's Friday, September 29th. Joe: Great. | |
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