Which of the following is not true regarding the establishment of a neuron's resting membrane potential?
A) Chemical and electrical forces both favor sodium ions entering the cell.
B) Electrical forces do not push sodium ions into the cell.
C) The chemical gradient for potassium ions tends to drive them out of the cell.
D) Ion pumps in the plasma membrane eject sodium ions as fast as they cross the membrane.
E) Resting membrane permeability to Na+ is very low.

Question

Quizplus · Accepted Answer

The electrical forces actually do push sodium ions into the cell, contributing to the establishment of the resting membrane potential. Sodium ions are positively charged, and the inside of a neuron at rest is negatively charged, creating an electrical gradient that attracts sodium ions into the cell.

Which of the Following Is Not True Regarding the Establishment