Which of the following statements about resting potential is true?
A)A resting membrane allows much more sodium than potassium to diffuse across it.
B)The concentration of sodium is much higher inside the cell than outside.
C)The resting potential exists because of differences in glucose concentration inside and outside the cell.
D)The sodium-potassium pump contributes to the resting membrane potential.

Question

Quizplus · Accepted Answer

The sodium-potassium pump helps to maintain the concentration gradients of sodium and potassium, which contribute to the resting membrane potential. A resting membrane actually allows much more potassium than sodium to diffuse across it, so choice A is incorrect. The concentration of sodium is much higher outside the cell than inside, not the other way around, making choice B incorrect as well. Glucose is not directly involved in the resting potential, making choice C incorrect.

Which of the Following Statements About Resting Potential Is True