Water makes up a large percentage of the body’s cells. For a cell to remain in homeostasis, there must be a mechanism to control water changes in the cells. The movement of water from an area of high water concentration to an area of low water concentration is

Osmosis is the movement of water across a selectively permeable membrane from an area of higher water concentration to an area of lower water concentration. This movement helps cells regulate their water balance. Diffusion can describe the movement of many substances, but the specific term for water movement is osmosis.

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