The cellular process diffusion does not require cellular Fill in the blank text field 1 energy
to reach equilibrium. Similarly,
uses a selectively permeable membrane to reach equilibrium. This membrane allows
equilibrium
to pass through, but not soluble particles or molecules. It too does not require cellular energy. When molecules cannot move through a cell membrane passively, the cell uses a process called
. This process uses

found in the cell’s membrane to pass particles and reach equilibrium.