The resting membrane potential in animal cells depends largely on _______channel
A. Na+
B. Ca2+
C. K+
D. Cl-
查看答案
Ras is a _________
A. Integral membrane protein
B. lipid-anchored membrane protein
C. Peripheral membrane protein
D. Extracellular protein
To what site does Sar1 bind after it binds to GTP?
A. The luminal leaflet of the ER membrane
B. The cytosolic leaflet of the Golgi membrane
C. The luminal leaflet of the Golgi membrane
D. The cytosolic leaflet of the ER membrane
Which of the following is NOT the morphological characteristics of senescent cells?
A. increased cell size
B. ruptured plasma membrane
C. flat cytoplasm
D. enlarged cytoplasm
The drug taxol acts to
A. block microtubule assembly.
B. stabilizes microtubule against depolymerization.
C. promote cell division
D. sever microtubules
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