Cell Transport Vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Passive transport | The movement of substances across a cell membrane without the use of energy by the cell
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Osmosis | The diffusion of water
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Isotonic | A solution whose solute concentration is equal to the solute concentration inside the cell
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Facilitated diffusion | The transport of substances through a cell membrane along a concentration gradient with the aid of carrier proteins
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Endocytosis | The process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell
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Phagocytosis | The process by which a cell engulfs large particles or whole cells, either as a defense mechanism or as a means to obtain food
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Sodium-Potassium Pump | A carrier protein that used ATP to actively transport sodium ions out of a cell and potassium ions into the cell
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Diffusion | The movement of particles from regions of higher density to regions of lower density
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Concentration gradiant | A difference in the concentration of a s substance across a distance
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Exocytosis | The process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and expels it.
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Hypotonic | Describes a solution whose solute concentration is lower than the solute concentration inside a cell
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Hypertonic | Describes a solution whose solute concentration is higher than the solute concentration inside a cells
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Contractile Vacuole | An organelle that accumulates water and then releases it periodically to maintain osmotic pressure
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Plasmolysis | The contraction or shrinking of the cell membrane
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Cytolysis | The bursting of a cell
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Carrier protein | A protein that transports substances across a cell membrane
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Ion channel | A complex of protein molecules in a cell membrane that form a pore through which ions can pass
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Active transport | The movement of chemical substances across the cell membrane against a concentration gradient; requires cells to use energy
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Pinocytosis | A method of active transport across the cell membrane in which the cell takes in extracellular fluids
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Created by:
cpolumbo
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