What is the Voltage Across a Membrane Called

Question

What is the voltage across a membrane called?
A) water potential
B) chemical gradient
C) membrane potential
D) osmotic potential
E) electrochemical gradient

Accepted Answer

The voltage across a membrane is called the membrane potential. This is the difference in electric potential between the interior and exterior of a cell membrane, which is caused by the distribution of ions across the membrane.

Answer: E
 The membrane potential is part of the electrochemical gradient, which refers to the combined effect of the membrane potential and the concentration gradient of ions across the membrane. The electrochemical gradient influences the movement of ions and other molecules across the membrane.