Ch. 3 Terms
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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| cell theory | the movement of substances across a cell membrane without the use of energy by 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 gradient | a difference in the concentration of a substance across a distance
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| osmosis | the diffusion of water or another solvent from a more dilute solution to a more concentrated solution through a membrane that is permeable to the solvent
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| isotonic | solution that has an equal concentration of dissolved particles compared with another solution
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| hypertonic | describes a solution whose solute concentration inside a cell
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| hypotonic | describes a solution whose solute concentration inside a 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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| 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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| 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 | uptake of a solid particle into a cell by engulfing the particle
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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 then fuses with the membrane to let the substance
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| cytoplasm |
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| organelle |
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| prokaryotic cell |
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| eukaryotic cell |
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| cytoskeleton |
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| nucleus |
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| endoplasm reticulum |
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| ribosome |
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| Golgi apparatus |
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| vesicle |
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| mitochondrion |
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| vacuole |
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| lysosome |
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| centriole |
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| cell wall |
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| chloroplast |
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| cell membrane |
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| phospholipid |
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| fluid mosaic model |
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| selective permeability |
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| receptor |
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