If the resting membrane potential is - 70 mV, which cation will move more frequently through a small cation channel?
A)calcium
B)hydrogen
C)magnesium
D)potassium
E)sodium

Question

Quizplus · Accepted Answer

Sodium ions (Na+) will move more frequently through a small cation channel because the resting membrane potential of -70 mV is closer to the equilibrium potential of potassium, making sodium the ion with a stronger electrochemical gradient driving its movement into the cell.

If the Resting Membrane Potential Is - 70 MV, Which