Final answer:
Osmosis is important for the movement of water across cell membranes and maintaining cell balance.
Step-by-step explanation:
Osmosis is important to cells because it allows for the movement of water across cell membranes. This process is crucial for maintaining the balance of water and solutes inside the cell, which is necessary for proper cell function. If a cell takes in too much water, it can swell and potentially burst, while if it doesn't get enough water, it can shrink and become dehydrated.
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