Which of the following molecules would decrease the electrochemical gradient across a membrane?
A) an aquaporin
B) a proton pump
C) a potassium channel
D) a sucrose carrier protein

Question

Quizplus · Accepted Answer

A potassium channel allows potassium ions to move across the membrane down their concentration gradient, which can decrease the electrochemical gradient if potassium ions move from a region of higher concentration to one of lower concentration. Aquaporins facilitate water movement and do not directly affect ion gradients. Proton pumps actively transport protons across the membrane, creating an electrochemical gradient rather than decreasing it. Sucrose carrier proteins transport sucrose and do not directly affect the electrochemical gradient of ions.

Which of the Following Molecules Would Decrease the Electrochemical Gradient