Depolarization of a cell membrane occurs because?
a. more sodium ions diffuse into the cell than potassium ions diffuse out of it
b. the concentration of sodium and potassium ions in the cell is at equilibrium
c. the concentration of sodium and potassium ions in the extra cellular fluid is at equilibrium
d. sodium ions are blocked from entering the cell
Answer: a. more sodium ions diffuse into the cell than potassium ions diffuse out of it
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