Multiple Choice
The plasma membrane of an excitable cell is more permeable to K+ because
A) of its positive electrical charge.
B) there are more leak ion channels for K+ than Na+.
C) protein molecules cannot exit through the plasma membrane.
D) calcium ions block Na+ and Cl- channels.
E) there are more gated channels for K+.
Correct Answer:

Verified
Correct Answer:
Verified
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