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5 Cards in this Set
- Front
- Back
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Diffusion
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the process by which molecules of a substance more from areas of higher concentration of a substance to areas of lower concentration
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How do cells move material in and out?
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diffusion
osmosisi active transport |
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active transport
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This requires energy from the cell to move material in or out of the cell regardless of the concentration. Substances that enter the cell through active transport are calcium, potassium and sodium
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osmosis
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a special type of diffusion: diffusion of water into or out of the cell from a place of higher concentration to a place of lower concentration
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selectively permeable
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permits only certain substances to enter and leave the cell
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