Why Do Na⁺ Ions Enter the Cell When Voltage-Gated Na⁺

question 20

Multiple Choice

Why do Na⁺ ions enter the cell when voltage-gated Na⁺ channels are opened in neurons?

• A)because the Na⁺ concentration is much higher outside the cell than it is inside
• B)because the Na⁺ ions are attracted to the negatively charged interior
• C)because the Na⁺ ions are actively transported by the sodium-potassium pump into the cell
• D)both A and B
• E)both A and C

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Definitions:

Earnings Per Share

A company's profit divided by the number of common shares outstanding, indicating the profitability on a per-share basis.

Stockholders' Equity

Represents the residual value of assets minus liabilities, indicating the ownership interest of shareholders in a company.

Earnings Per Share

A financial metric that calculates the portion of a company’s profit allocated to each outstanding share of common stock, indicating a company's profitability.

Common Stock

Equity ownership in a corporation, providing voting rights and potential dividends to shareholders.