Why is it possible for potassium to diffuse easily into and out of cells?
a. Potassium has a greater concentration in the intracellular fluid (ICF).
b. Sodium has a greater concentration in the extracellular fluid (ECF).
c. The resting plasma membrane is more permeable to potassium.
d. An excess of anions are inside the cell.
Ans: c. The resting plasma membrane is more permeable to potassium.
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