The electrochemical gradient across a membrane would generally be increased by which of the following membrane proteins?

Question

Quizplus · Accepted Answer

A hydrogen ion pump actively transports hydrogen ions out of the cell or into a compartment, increasing the concentration of hydrogen ions outside the cell or inside the compartment. This creates an electrochemical gradient, as the concentration of positive charges is higher on one side of the membrane than the other. Therefore, a hydrogen ion pump would generally increase the electrochemical gradient across a membrane. The other options, such as a calcium ion channel or a sucrose-proton cotransporter, do not necessarily contribute to an electrochemical gradient. A sodium ion channel also depends on the concentration gradient of sodium ions, which alone does not create an electrochemical gradient.

The Electrochemical Gradient Across a Membrane Would Generally Be Increased