Biology Nervous Coordination SZABMU 2024
PMDC Verified Question 15 of 86
In a resting membrane, the concentration of K+ ions on inside of the membrane is ____ times greater than outside the membranes.
A
Twenty-five times
B
Fifteen times
C
Ten times
D
Twenty times
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Twenty times
Concept: Resting membrane ion concentration gradients.

Solution: Active transport by the Na⁺/K⁺ pump maintains an intracellular Potassium (\(K^+\)) concentration that is roughly 10 to 30 times greater inside the cell than in the extracellular fluid.

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