Diffusion is the movement of molecules across a semi permeable membrane. And and equilibrium is when two influences of different substances cancel out each other.
Diffusion is the movement of molecules from areas of high concentration to areas of low concentration, leading to a homogenous distribution. Equilibrium is the state where concentrations of substances are equal on both sides of a membrane, and while no net movement occurs, molecules continue to move in both directions. Together, these concepts describe how substances behave in biological systems.
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