During the process of ________,water diffuses across a semipermeable membrane from an area where water is more concentrated to an area where water is less concentrated (it moves along the water concentration gradient).

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The process described here is osmosis, where water moves from an area of high concentration (hypotonic) to low concentration (hypertonic) across a semipermeable membrane. Simple diffusion and facilitated diffusion also involve the movement of substances along a concentration gradient, but they do not necessarily involve a semipermeable membrane or the selective movement of water molecules. Pinocytosis involves the engulfment of extracellular fluid by the cell through the formation of vesicles, which is not related to the movement of water molecules across a membrane.

During the Process of ________,Water Diffuses Across a Semipermeable Membrane