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19 Cards in this Set
- Front
- Back
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Passive Transport |
Transport through the cell membrane that doesn't require energy |
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Diffusion |
the movement of molecules or particles from an area with a high concentration to a low concentration. |
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Concentration gradient |
the difference in the concentration of a substance across a distance |
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Equilibrium |
a state that exists when the concentration of a substance is the same throughout the space |
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osmosis |
the movement of water molecules throughout an area |
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hypotonic |
when a cell is taking in more water than usually. It will take in so much of it that it will eventually burst. |
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hypertonic |
when a cell looses too much of it's water, it becomes shriveled. |
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isotonic |
when the same amount of water is inside the cell and outside of the cell |
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contractile vacuole |
when a vacuole releases water in order to maintain a balanced pressure |
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facilitated diffusion |
Diffusion among the concentration gradient with the assistance of carrier proteins |
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carrier proteins |
a protein that transports substances across the cell membrane |
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ion channel |
a complex of protein molecules in the cell membrane that form a passage through the membrane |
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active transport |
the transportation of substances with the assistance of energy (ATP) |
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sodium potassium pump |
a carrier protein that uses ATP to actively transport substances |
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endocytosis |
when a cell wraps its membrane around a substance in order for it to bring the substance into the cell |
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vesicle |
a small sac that contains materials in an eukaryote cell |
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phagocytosis |
when a cell engulfs large particles or whole cells either to kill it or to eat it |
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phagocyte |
a cell that ingests and destroys foreign matter or bad things |
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exocytosis |
when a vacuole takes itself and the things it has inside and bonds together with the cell membrane in order to release the particles outside of the cell |
