Main content
Course: AP??/College Biology?>?Unit 2
Lesson 6: Facilitated diffusionFacilitated diffusion
Problem
The / ATPase, or sodium-potassium pump, is a membrane protein that uses energy from ATP hydrolysis to transport sodium ions ( ) and potassium ions ( ) against their concentration gradients. The steps of ion exchange carried out by the / ATPase are depicted in the following diagram.
Given the concentration gradient established by the Na /K ATPase, which of the following movements can occur?