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1. Explain how an equilibrium is established as a result of diffusion. 2. Distinguish between diffusion and osmosis. 3. Explain how substances cross the cell membrane through facilitated diffusion. 4. Explain how ion channels assist the diffusion of ions across the cell membrane.
Diffusion is Driven By the KINETIC ENERGY the molecules possess. Because of their Kinetic Energy, molecules are in Constant Motion. Diffusion occurs when molecules move randomly away from each other in a liquid or gas.