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Cell Transport

(cell membrane) Seminole county Florida Biology

TermDefinition
plasma membrane thin, flexible barrier that surrounds all cells; regulates what enters and leaves the cell
phospholipids form the lipid bilayer in cell membranes where their hydrophobic tails face inward while their hydrophilic polar heads face outward
isotonic when the concentration of two solutions is the same
osmosis diffusion of water through a selectively permeable membrane
dynamic equilibrium a steady state
active transport movement from an area of lower concentration to an area of higher concentration, requires energy, and a carrier protein?
concentration gradient change in the concentration of solutes in a solution as a function of distance through a solution
facilitated diffusion molecules pass across the membrane through channels
hypertonic the solution with the greater concentration of solutes
hypotonic the solution with the lesser concentration of solutes
semipermeable (selectively permeable) allows some substances to pass across while others can't
bilayer double layer (2)
diffusion particles move from an area of high concentration to an area of low concentration
Created by: crystalhawes