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science
transporting cells
Term | Definition |
---|---|
why are cells so small? | surface area to volume ratio-- works faster when small |
concentration | |
solvent | |
solute | |
selectively premenable | |
permenable | |
diffusion | |
osmosis | |
hypertonic | |
hypotonic | more water-- less solute |
isotonic | two solutions with the same gradient |
passive transport | doesn't take energy to move |
active transport | takes energy to move |
endocytosis | goes into the cell -- LOTS of energy ( white blood cells) |
phagocytosis | breaks down large solid particles |
pinocytosis | breaks down small particles ( dissolved) |
exocytosis | active transport-- only dissolved substances gets spit out into the "blood stream" |
plasmolysis | shrinking of cells |
vesicle | membrane- bound cells |
cytolysis | bursting of cells |
concentration gradient | concentration difference across space |
sodium potassium pumps transport what? | positive inside-- moves Na+ ions in and K+ ions out |
do plant cells explode? | nope-- cell wall protection |
gated channels | how do ions cross lipid bilayer? |