Question

During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will _________________________________.

only move across the membrane to the outside of the cell.

continue to move across the membrane in both directions.

only move across the membrane to the inside of the cell.

stop moving across the membrane.

Answer 1

continue to move across the membrane in both directions.

(At equilibrium molecules still move randomly across the membrane, but there is no net change in concentration.)