When an Action Potential Begins and Sodium Channels Open,why Does

question 63

Multiple Choice

When an action potential begins and sodium channels open,why does sodium rush into the cell? (Check all that apply.)

• A)The inside of the cell is negatively charged.
• B)The inside of the cell is positively charged.
• C)Chloride ions are waiting to bind to the sodium inside the cell.
• D)The diffusion gradient drives sodium into the cell.
• E)Channels use energy to move ions across the membrane whenever they are open.

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