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8 Cards in this Set
- Front
- Back
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Molecules enter or leave a cell through
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Diffusion or active transport.
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What is diffusion?
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Movement of molecules from an area of high concentration to an area of low concentration. This does not require energy.
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Osmomis is defined as...
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The diffusion of water.
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Hypertonic
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There is less concentration outside the cell, water moves out, cell shrinks
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Hypotonic
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There is less concentration inside the cell, water moves in, expands
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Isotonic
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There is equal concentration outside and inside the cell, cell stays the same. No net change. A state during which there is no need for diffusion.
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Equilibrium
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There is equal concentration outside and inside the cell, cell stays the same. No net change. A state during which there is no need for diffusion.
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Active Transport
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Molecules move from low concentration to high concentration. This requires energy, specifically ATP.
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