Which of the following is TRUE for a nerve cell at rest?

Question

Quizplus · Accepted Answer

At rest, a nerve cell maintains a negative charge inside the cell relative to outside the cell. This is achieved through the selective permeability of the cell membrane, which allows potassium ions to move out of the cell through potassium channels. This creates a concentration gradient that favors the movement of potassium ions out of the cell. In addition, sodium ions are also present outside the cell in high concentration. However, they cannot freely move into the cell because of the closed state of the sodium channels. Therefore, the correct answer is D, which states that channels allow potassium to move out of the cell and sodium ions are concentrated outside the cell. Chloride ions do not have a significant role in maintaining the resting potential of the nerve cell.

Which of the Following Is TRUE for a Nerve Cell