Final answer:
Osmosis is the movement of water across membranes driven by concentration gradients, a vital process in cells.
Explanation:
Osmosis is the process of water moving across a semipermeable membrane from an area of low solute concentration to an area of high solute concentration. This is a type of passive transport along with diffusion, where molecules move from areas of high concentration to areas of low concentration. The movement in osmosis and diffusion is driven by concentration gradients, and both processes are essential for maintaining cellular functions.
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