Which of the following is an example of equilibrium?

Question

Quizplus · Accepted Answer

Equilibrium refers to a state where there is no net movement of a substance across a membrane. In option A, the substance moves into and out of the cell at the same rate, indicating that there is no net movement, which is an example of equilibrium. Option B, C, and D involve the movement of a substance either with or against a concentration or electrochemical gradient, indicating that there is a net movement, which is not an example of equilibrium.

Which of the Following Is an Example of Equilibrium