The Diffusion Potential Due to the Concentration Gradient for Na⁺

question 25

Multiple Choice

The diffusion potential due to the concentration gradient for Na⁺ across a nerve cell membrane:

• A) favors its movement into the cell at the resting membrane potential.
• B) favors its movement out of the cell at the resting membrane potential.
• C) is equal and opposite to the electrical potential acting on Na⁺ at the resting membrane potential.
• D) Is in the same direction as the diffusion potential due to the concentration gradient for K⁺.
• E) favors movement of Na⁺ in the opposite direction as the electrical potential acting on Na⁺ at the resting membrane potential.

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