| Term | Definition |
|---|
| Isotonic Solution | solute concentration is the same inside and outside of cell |
| Hypotonic Solution | solute concentration is higher in the cell; water moves into cell (cell swells and bursts) |
| Hypertonic Solution | solute concentration is greater outside of cell; water moves out of cell (cell shrinks) |
| Osmosis | water molecules diffuse across a membrane, moves from high to low water concentration until equilibrium reached |
| Turgor Pressure | the amount of pressure inside cells; moves water IN |
| Cytolysis | cells burst b/c they take in too much water; water moves OUT |
| Plasmolysis | cells shrivel; water moves out; one-celled fresh water organisms ride excess water by contractile vacuoles |
| Filtration | forced movement of molecules through membranes, mainly by blood pressure through porous capillary walls |
| Edema | excess tissue fluid |
| Escharotomoy | procedure to reduce edema in burn victims |
| Active Mechanisms | require energy |
| Active Transport | moves substances from low to high concentrations; needs chemical energy |
| Endocytosis | brings substances too large to pass through membrane into the cell |
| Pinocytosis | brings solutes or fluids into a cell |
| Phagocytosis | brings large food particles or whole microorganisms into the cell |
| Exocytosis | passing large molecules out of the cell |
| Diffusion | molecules are in constant motion |
| Active Transport Transports . . . | amino acids, sodium, potassium, calcium, hydrogen ions |
| Solvent | substance that dissolves the solute (water) |
| Solute | substances dissolved in solution (kool-aid) |
Combine with other sets
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