Question

How is potential difference related to the concentration of the ions?

Answer 1

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✔✔ The inside of the cell has a low concentration of sodium ions, and the outside of the cell has a higher concentration of sodium ions.

✔✔ The Na+ ions have moved down their concentration gradient until their further movement is opposed by a countervailing electrical potential difference across the membrane.

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Answer 2

The inside of the cell has a low concentration of sodium ions, and the outside of the cell has a higher concentration of sodium ions.