Which of the following does not characterize an electrochemical gradient across a membrane?
A) It depends on the ion concentration gradient.
B) It depends on the voltage difference across the membrane.
C) It is a force acting on ions.
D) It determines the direction and amount of net movement of ions through ion channels.
E) It is unaffected by gates on channels.

Question

Quizplus · Accepted Answer

The electrochemical gradient can be affected by gates on channels, such as voltage-gated or ligand-gated channels. These gates can open or close in response to changes in voltage or the presence of specific molecules, altering the permeability of the membrane and thus the direction and amount of ion movement. Therefore, E is the option that does not characterize an electrochemical gradient.

Which of the Following Does Not Characterize an Electrochemical Gradient