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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 |