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15 Cards in this Set
- Front
- Back
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Active Transport
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Transport across the cell membrane that requires ATP.
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Diffusion
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Movement of a substance across a membrane.
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Endocytosis
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Vesicle transport that moves a substance into the cell.
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Exocytosis
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Type of vesicle transport that moves a substance out of the cell.
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Facilitated Diffusion
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Diffusion with the help of transport proteins.
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Osmosis
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Diffusion of water molecules across a membrane.
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Passive Transport
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Substances cross the plasma membrane without any input of energy from the cell.
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Sodium-Potassium Pump
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When this pump is in operation, sodium ions are pumped out of the cell, and potassium ions are pumped into the cell.
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Transport Proteins
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The help comes from special proteins in the membrane.
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Vesicle Transport
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Very large molecules cross the plasma membrane with a different sort of help.
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Hypertonic Solution
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Greater concentration of solutes on the outside of the cell.
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Hypotonic Solution
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Has less solute and more water than any other solution.
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Isotonic Solution
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Two solutions having the same osmotic pressure across the semipermeable membrane.
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Concentration Gradient
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The process of particles moving through gas or solution to a higher number of particles in the area.
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Equilibrium
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Opposing forces are balanced |
