During tonic contraction, the action potential of muscle cells []
A. Increase the amplitude
B. Decrease the amplitude
C. the amplitude sometimes big and sometimes small
Decrease the frequency
E. No overlap
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O2 and CO2 enter and exit the cell membrane in the body through []
A. Simple diffusion
B. Facilitated diffusion
C. Active transport
D. endocytosis
E. exocytosis
The way that large protein enters the cell membrane is []
A. Simple diffusion
B. Facilitated diffusion
C. Active transport
D. endocytosis
E. exocytosis
The protein involved in the facilited diffusion of the cell membrane is []
A. Channel proteins and regulatory proteins
B. Pump proteins and carrier proteins
Channel proteins and carrier proteins
D. Regulator proteins and pump proteins
E. Channel proteins and pump proteins
The energy of glucose reabsorption of proximal tubule epithelial cells comes directly from []
A. Na+ concentration difference
B. Glucose concentration difference
C. Potential difference
D. ATP decomposition
E. Creatine phosphate decomposition
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