| Term | Definition |
|---|
| lipid bilayer | two layers of lipids that make up the cell membrane |
| diffusion | a way that cells take in nutrients by thee movement of particles from an area of higher concentration to an area of lower concentration |
| passive transport | the movement of materials inot or out of the cell without the expenditure of energy |
| equilibrium | when concentrations are equal on either side ot fhe cell membrane |
| semi-permeable membranes | membranes that will allow some particles to pass through and not allow others |
| osmosis | the movement of waterin a cell from an area of higher concentration to an area of lower concentration |
| concentration gradient | the difference in concentration tha makes osmosis possible |
| solute | the substance that dissolves in a solvent |
| solvent | the substance that dissovles the solute (in the cell it is water) |
| solution | a substance that has a solute dissovled in a solvent |
| hypertonic | solution that the concentration of the solute is higher outside the cell than inside the cell |
| hypotonic | a solution in which the concentraion of the solute is greater inside the cell than outside the cell |
| facilitated diffusion | when a few molecules can pass through the cell membrane easier than expected |
| active transport | Movement of substance across the cell membrane that requires energy |
| endocytosis | the process by which substances are transported into the cell by the movement of the cell membrane |
| exocytosis | he process by which substances are transported out of the cell by vacuole |
| homeostasis | the ability of a cell to regulate its internal condition despite changes to the envronment |
| metabolism | the sum total of the body's chemical activities |
Combine with other sets
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