Which of the Following Is True for the Sodium-Potassium Exchange

question 57

Multiple Choice

Which of the following is true for the sodium-potassium exchange pump?

• A) It pumps an equal number of ions into and out of the cell.
• B) It passively distributes ions along their concentration gradient.
• C) It passively distributes ions along their electrical gradient.
• D) It pumps two potassium ions into the cell and three sodium ions out of the cell.
• E) It is unrelated to maintaining ion balance in the cell.

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Definitions:

Acetaldehyde

A colorless volatile compound with a pungent odor, used in the manufacture of acetic acid, perfumes, and flavors.

Deprotonated

Refers to the removal of a proton (H+) from a molecule, resulting in the formation of a negatively charged ion.

Resonance

A phenomenon in chemistry where a molecule or ion can be represented by two or more equivalent structures, indicating the delocalization of electrons.

Anion

A negatively charged ion, which has more electrons than protons.