All the following statements describe the Na⁺-K⁺ pump EXCEPT which one
A)Its phosphorylated conformation has high affinity for K⁺ when exposed to the ICF.
B)It has ATPase activity.
C)It establishes Na⁺ and K⁺ concentration gradients across the plasma membrane; these gradients are critically important in the ability of nerve and muscle cells to generate electrical impulses essential to their functioning.
D)It helps regulate cell volume by controlling the concentration of solutes inside the cell to minimize osmotic effects that would induce swelling or shrinking of the cell.

Question

Quizplus · Accepted Answer

The statement that describes the Na⁺-K⁺ pump is incorrect is A because its phosphorylated conformation has high affinity for Na⁺ rather than K⁺ when exposed to the ICF. The other statements are correct: the pump has ATPase activity, establishes Na⁺ and K⁺ concentration gradients across the plasma membrane, and helps regulate cell volume.

All the Following Statements Describe the Na⁺-K⁺ Pump EXCEPT Which