Diffusion is the movement of molecules from high to low concentration, while osmosis specifically describes water movement through a semipermeable membrane based on concentration gradients.
Diffusion is the process by which molecules move from areas of high concentration to low concentration until equilibrium is reached. Osmosis is a type of diffusion specific to water movement through a semipermeable membrane based on the concentration gradient. Hypertonic, hypotonic, and isotonic solutions play a key role in understanding water movement in cells.
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