Chapter 7 Cell structure and function
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Created by:
bufordbiology on March 23, 2012
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14 terms
Terms | Definitions |
|---|---|
 lipid bilayer | double layer that forms the cell membrane |
| diffusion | movement of molecules from an area of high concentration to low concentration |
| osmosis | diffusion of water |
| isotonic | equal amounts of solute and solvent in a solution |
| hypertonic | a solution with high amount of solute (more solute than solvent) |
| hypotonic | solution with low amount of solute (less solute than solvent) |
| active transport | movement of molecules across the cell membrane that requires energy |
| endocytosis | movement of molecules into the cell |
| exocytosis | movement of molecules out of the cell |
| phagocytosis | movement of solid molecules into the cell |
| pinocytosis | movement of liquid molecules into the cell |
| concentration | mass of solute in a given volume of solution |
| equilibrium | when the concentration of a solution is the same throughout |
| facilitated diffusion | movement of specific molecules across cell membranes through protein channels |
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