If you experimentally increase the concentration of Na⁺ outside a cell while maintaining other ion concentrations as they were,what would happen to the cell's membrane potential?
A)The membrane potential would decrease.
B)The membrane potential would increase.
C)The membrane potential would be unaffected.
D)The answer depends on the thermodynamic potential.

Question

Quizplus · Accepted Answer

Increasing the concentration of Na⁺ outside the cell would increase the electrochemical gradient for Na⁺ to enter the cell, making the inside of the cell more positive and thus increasing the membrane potential.

If You Experimentally Increase the Concentration of Na⁺ Outside a Cell