Water in cells should be maintained in narrow range of concentration for optimal function.
What happens if water concentration of a cell increases beyond the range?
If we put a cell in a hypotonic solution... (Solution with less salt concentration).
Osmosis is the net movement of water molecules from a region of high concentration to a region of their low concentration through a selectively permeable membrane.
Therefore water molecules move from external watery environment to the cell. This is known as endosmosis.
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