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10 Cards in this Set
- Front
- Back
Active Transport |
the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy. |
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Diffusion |
the intermingling of substances by the natural movement of their particles. |
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Endocytosis |
the taking in of matter by a living cell by invagination of its membrane to form a vacuole. |
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Exocytosis |
A process by which the contents of a cell vacuole are released to the exterior through fusion of the vacuole membrane with the cell membrane. |
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Facilitated Diffusion |
the process of spontaneous passive transportof molecules or ions across a biological membrane |
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Osmosis |
a process by which molecules of a solvent tend to pass through a semipermeable membrane from a less concentrated solution into a more concentrated one, thus equalizing the concentrations on each side of the membrane. |
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Passive Transport |
A movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input |
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Sodium Potassium Pump |
Transports potassium ions into the cytoplasm while simultaneously transporting sodium ions out of the cytoplasm |
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Transport Protein |
A protein that serves the function of moving other materials within an organism. |
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Vesicle Transport |
a cell encloses extra cellular material to form a vesicle, then moves the vesicle across the cell to eject the material through the opposite cell membrane |