What is the Function of Proton Pumps Localized in the Plant

Question

What is the function of proton pumps localized in the plant plasma membrane?
A) to transfer metal ions across the plasma membrane
B) to transfer phosphorous groups from ATP to proteins
C) to create ATP
D) to transfer anions across the plasma membrane
E) to create a membrane potential

Accepted Answer

The function of proton pumps localized in plant plasma membrane is to create a membrane potential. This is done by pumping H+ ions out of the cell, creating a concentration gradient and charge imbalance across the membrane. This membrane potential is essential for numerous processes in the plant cell, including nutrient uptake and ion transport.