Which of the Following Is True About the Movement of Ions

question 25

Multiple Choice

Which of the following is true about the movement of ions across excitable living membranes?

• A) Ions always move actively across membranes through leakage channels.
• B) Sodium gates in the membrane can open in response to electrical potential changes.
• C) Ions always move passively across membranes.
• D) Ions always move from an area of higher concentration to an area of lower concentration.

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Definitions:

Alcoa

Aluminum Company of America, a major producer and supplier of aluminum and related products, historically significant in the development of the aluminum industry.

Antitrust

Laws and regulations designed to promote competition and prevent monopolies or anti-competitive practices in the marketplace.

Multinationals

Large corporations that operate and deliver products or services in more than one country beyond their home base.

High-Water Mark

The highest peak in value an investment fund or account has reached, often used as a threshold for calculating performance fees.