| Term | Definition |
|---|
| Passive transport | The movement of materials through a cell membrane without using energy |
| Active transport | the movement of materials through a cell membrane using energy |
| DIffusion | process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated |
| Facilitated diffusion | Passive pathway provided by transport proteins that helps certain molecules pass through a membrane |
| Carrier protein | a protein that transports substances across a cell membrane |
| Osmosis | diffusion of water through a selectively permeable membrane |
| Osmotic pressure | The additional pressure needed to reverse osmosis. |
| Hypotonic | when comparing two solutions, the solution with the lesser concentration of solutes |
| Hypertonic | when comparing two solutions, the solution with the greater concentration of solutes |
| Isotonic | when the concentration of two solutions is the same |
| Endocytosis | the active transport process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell |
| Exocytosis | the active transport process by which vesicles fuse with the cell membrane and release their contents outside the cell |
| Pressure gradient | Difference in hydrostatic pressure that drives filtration |
| Hydrostatic pressure | Pressure exerted by a volume of fluid against a wall, membrane, or some other structure that encloses the fluid. |
| Capillary filtration | the forcing of fluid and solutes through the capillary wall pores from the intravascular fluid into the interstitial fluid. |
| Intravascular fluid | liquids within blood vessels |
| Interstitial fluid | the solution that bathes and surrounds the cells of multicellular animals. |
| Capillary | microscopic blood vessel that enables the exchange of substances between the blood and interstitial fluid |
Combine with other sets
Share on Facebook
Share on MySpace