Which of the following statements about membrane permeability and ion potential is correct?
A)The concentration of potassium ions is the same extracellularly and intracellularly.
B)The concentration of potassium is higher extracellularly than intracellularly.
C) The concentration of sodium is higher extracellularly than intracellularly.
D) The concentration of sodium is lower extracellularly than intracellularly.

Question

Quizplus · Accepted Answer

The correct statement is that the concentration of sodium is higher extracellularly than intracellularly. This is due to the activity of ion pumps and channels that maintain a concentration gradient for sodium and potassium ions across the membrane. The concentration of potassium is higher intracellularly than extracellularly, which creates a resting membrane potential.

Which of the Following Statements About Membrane Permeability and Ion