10- If you were to increase the concentration of K+ (potassium) outside of a cel

Question

10- If you were to increase the concentration of K+ (potassium) outside of a cell, what do you predict to happen to the membrane potential of the cell?

a) It would hyperpolarize the membrane potential because more K+ would leave the cell.

b) It would depolarize the membrane potential because less K+ would leave the cell.

c) It would hyperpolarize the membrane potential because less K+ would leave the cell.

d) It would depolarize the membrane potential because more K+ would leave the cell.

e) It would not affect the membrane potential.

11) The depolarization phase of an action potential is typically caused by

a) K+ leaving the cell through non-gated k+ channels

b) Na+ leaving the cell through voltage-gated Na+ channels

c) Na+ entering the cell through voltage-gated Na+ channels.

d) K+ entering the cell through voltage-gated k+ channels.

e) Na+ entering the cell through non-gated Na+ channels

Explanation / Answer

10. B. It would depolarize the membrane potential because less k+ would leave the cell

11. C. Na+ entering the cells through voltage gated Na+ channels

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