Which of the Following Would Increase the Electrochemical Potential Across

Question

Which of the following would increase the electrochemical potential across a membrane?
A)a chloride channel
B)a sucrose-proton cotransporter
C)a proton pump
D)a potassium channel
E)both a proton pump and a potassium channel

Accepted Answer

A proton pump actively transports protons out of the cell or into a membrane-bound compartment, creating an electrochemical gradient. This increases the electrochemical potential across the membrane. Chloride channels, potassium channels, and sucrose-proton cotransporters do not create an electrochemical gradient on their own.