click below
click below
Normal Size Small Size show me how
Cell Transport
| Term | Definition |
|---|---|
| semipermeable | only some particles enter and exit the cell |
| cell membrane | maintain homeostasis and regulate what comes in and out of the cell |
| diffusion | movement of particles from a high concentration to a low concentration |
| osmosis | the movement of water from a high to low concentration |
| facilitated diffusion | the use of a carrier protein to move substances from a high to low concentration |
| passive transport | a type of movement the does not require energy, moves substances down the gradient from a high to low concentration |
| active transport | a type of movement that requires energy, moves substances against the gradient from low to high |
| isotonic | equal(same) movement of water in and out of the cell |
| hypertonic | less water outside the cell so water leaves the cell and the cell shrinks |
| hypotonic | more water outside the cell so water enters the cell and the cell swells |
| phagocytosis | large particles(food or bacteria) are surrounded and engulfed by the cell membrane |
| pinocytosis | liquid is brought in by a vesicle |
| exocytosis | cell deposits particles outside the cell |
| active transport examples | endocytosis, exocytosis |
| passive transport examples | diffusion, osmosis, facilitated diffusion |