| A | B |
|---|
| Active Transport | movement of substance across cell membrane with use of energy from ATP |
| Passive Transport | Movement of a substance across a cell membrane by diffusion |
| Carrier Molecules | a protein that functions in the transport of molecules across a membrane |
| Concentration Gradient | the difference in concentration of a substance across a space |
| Contractile vacuole | An organelle in microorganisms that excretes water |
| Cytolysis | Bursting of a cell because too much water has diffused into it |
| Diffusion | process by which molecules move from an area of greater concentration to an area of lesser concentration |
| Endocytosis | the process by which a cell surrounds and engulfs large substances |
| Exocytosis | The process by which wastes are packaged in vessicles and leave the cella cell |
| Equilibrium | A state which exists when the concentration of a substance is the same throughout a state |
| Facilitated Diffusion | a passive form of carrier transport often used in glucose transport across cell membrane |
| Gated Channel | A protein lined passage making cell membranes permeable to certain large molecules |
| Homeostasis | The biological balance between a cell or an organism and its environment |
| Hypertonic | The condition where the concentration of solute molecules is higher outside than inside a cell |
| Hypotonic | The condition where the concentration of solute molecules is lower outside than inside a cell |
| Isotonic | The condition where the concentration of solute molecules is equal on both sides of a cell membrane |
| Osmosis | The diffusion of water molecules through a selectively permeable membrance |
| semipermeable | A membrane which selectively allows some types of molecules to pass through but not all types |
| Phagocytosis | Type of endocytosis where cell takes in large particles (cellular eating) |
| Pinocytosis | Type of endocytosis where cell takes in liquids (cellular drinking) |
| Plasmolysis | The shrinking or wilting of a cell from low turgor pressure |
| Turgor Pressure | The pressure exerted by water molecules within a cell upon its membrane |
| Sodium Potassium Pump | An active transport mechanism that moves ions in order to achieve polarization (Na forced in and K forced out) |
