Which One of the Following Is TRUE Regarding the Sodium-Potassium

question 121

Multiple Choice

Which one of the following is TRUE regarding the sodium-potassium pump?

• A) Cholesterol molecules within the plasma membrane pump sodium out of the cell and potassium into the cell.
• B) In order to reduce cell volume, the cell decreases the activity of the sodium-potassium pump.
• C) Because the sodium-potassium pump works on the principle of diffusion, it does not require energy.
• D) Increased activity of the sodium-potassium pump causes an increase in cell volume.
• E) In order to maintain a certain cell volume, the sodium-potassium pump exchanges three sodium ions for two potassium ions.

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Definitions:

Cheilosis

A condition characterized by cracking and inflammation of the lips, corners of the mouth, often due to vitamin deficiency or infection.

Abdomen

The part of the body that lies between the thorax (chest) and pelvis, housing many vital organs, including the stomach, liver, and intestines.

Large Intestine

The final section of the digestive system, responsible for absorbing water and electrolytes and forming and storing feces.

Digestion

The biological process by which food is broken down into smaller components, making nutrients available for absorption into the body.