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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? |