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transporting cells

why are cells so small? surface area to volume ratio-- works faster when small
selectively premenable
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?
Created by: shelbs.harris



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