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9 Cards in this Set

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  • Back
osmosis
the diffusion of water across a selectively permeable membrane
isotonic solution
the concentration of dissolved substances in the solution is the same as the concentration of dissolved substances inside the cell
hypotonic solution
the concentration of dissolved substances is lower in the solution outside the cell than the concentration inside the cell.
hypertonic solution
the concentration of dissolved substances outside the cell is higher than the concentration inside the cell
passive transport
the movement of particles across membranes by diffusion
facilitated diffusion
the passive transport of materials across the plasma membrane with the aid of transport proteins
active transport
movement of materials through a membrane against concentration gradient that also requires energy from the cell
endocytosis
a process by which a cell surrounds and takes in material from its environment.
exocytosis
the expulsion or secretion of materials from a cell.