Question

If the resting axon's membrane becomes more permeable to potassium ions,

A) the inside of the membrane will become more positively charged.
B) the membrane will depolarize more rapidly.
C) it will take a stimulus of larger magnitude to initiate an action potential.
D) the membrane will become hyperpolarized.
E) the hyperpolarization at the end of the action potential will not occur.

Answer 1

If the resting axon's membrane becomes more permeable to potassium ions, the membrane will become hyperpolarized.

Step-by-step explanation:

If the resting axon's membrane becomes more permeable to potassium ions, the membrane will become hyperpolarized. Hyperpolarization occurs when the inside of the membrane becomes more negative than the cell's normal resting potential. This happens because potassium ions leave the cell, making the membrane potential more negative. As a result, option D) is the correct answer choice.