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Cell Transportation

TermDefinition
diffusion movement of dissolved molecules in a fluid or gas from a region of higher concentration to an area of lower concentration
facilitated diffusion diffusion of molecules assisted by protein channels that pierce a cell membrane
osmosis diffusion of water molecules across a semipermeable membrane from an area of higher water concentration to an area of lower water concentration
active transport energy requiring movements of molecules across a membrane from a region of lower concentration to an region of higher concentration
endocytosis the process of taking liquids or fairly large molecules in a cell by engulfing them in a membrane
exocytosis the opposite of endocytosis; is the release of substances out of a cell by the fusion of a vesicle with the membrane
selective permeability condition or quality of allowing some, but not all, materials to cross the barrier or membrane
hypertonic solution solution that has a higher concentration of dissolved particles than a cell
hypotonic solution solution that has a lower concentration of dissolved particles than a cell
isotonic solution solution that has an equal concentration of dissolved particles compared with another solution
Created by: meg.minor.15