【单选题】经济净现值是反映项目对国民经济净贡献的( )。
【单选题】The narrative of facilitation diffusion is wrong ( )
A.
Facilitated diffusion through carriers, such as the process of glucose entering the cell through cell membranes
B.
Facilitated diffusion through channels, such as the diffusion of K + and Na + from the high concentration side to the low concentration side of the membrane
C.
There is a high degree of structural specificity between the membrane protein as a carrier and the substance to be rotated
D.
Channel proteins are not specific for the substance being transported
【单选题】What are the membrane transporters that are responsible for both active transport and passive transport?
【单选题】The membrane proteins that play an important role in causing and maintaining Na +, K + unequal distribution inside and outside the cell are
【单选题】Which of the following statements are correct regarding G Proteins
A.
A GTP-binding protein (G protein) is located on the cytoplasmic face of the plasma membrane.
B.
Gs proteins can activate their downstream effectors when bound by GTP and also have the ability to hydrolyze GTP.
C.
The activated G protein can change the activity of an enzyme.
D.
All of the above are correct (A, B and C)
E.
The activated G protein cannot change the activity of an ion channel
【简答题】高尔夫俱乐部是一个向会员及其他客人提供高尔夫相关服务的场所,所以俱乐部的所有部门的设置都应该围绕 及 等相关业务而进行。
【判断题】Channel proteins are only responsible for passive transport.