Cell Transport Vocab
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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| Active Transport | the movement of chemical substances, usually across the cell membrane, against a concentration gradient; requires cells to use energy.
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| Concentration gradient | a difference in the concerntration of a substance across a substance across a distance
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| Diffusion | the movement of particles from regions of higher density to regions of lower density.
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| Equilibrium | a stable situation in which forces cancel one another
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| Fluid Mosaic Model | decorated with small pieces of colored glass or stone fitted together, a substance that is fluid at room temperature and pressure
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| Homeostasis | The maintenance of a constant internal state in a changing environment by continually making adjustments to the internal and external environment.
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| Hypertonic | discribes a solution whose solute concentration is higher than the solute concentration inside a cell.
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| Hypotyonic | discribes a solution whose solute concentration is lower than the solute concentration inside a cell.
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| Isotonic | a solution whose solute concentration is equal to the solute concentration inside a cell.
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| Osmosis | The diffusion of water or another solvent from a more dilute solution(of a solute) to a more concentrated solution(of the solute) through a membrane that is permeable to the solvent.
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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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| Permeability | the ability to let fluids pass through its open spaces, or pores
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| Phosopholipid | a lipid that contains phosphorus and that is a structural component in cell membranes
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| Solute | in a solution, the substance that dissolves in the solvent
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| solution | a homogeneous mixture throughout which two or more substaces are uniformly dispersed.
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| Solvent | in a solution, the substance in which the solute dissolves
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| Surface area-to-volume ratio | is the amount of surface area per unit volume of an object or collection of objects.
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| Sodium potassium pump | A special transport protein in the plasma membrane that transports sodium ions out of the cell and potassium ions into the cell against their concentration gradients. The process is powered by ATP.
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Created by:
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