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8 Cards in this Set

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  • Back
active transport
the movement of chemcical substances usually across the cell membrane against a concentration gradient requires energy
sodium potasium pump
a carrier protein that uses ATP to actively transport sodium ions out of the cell and potasium ions into the cell
endocytosis
the process by which a cell membrane surrounds a particle and encloses a particle in a vesicle to bring a particle into the cell
vesicle
a small cavity of sac that contains materials in a eukaryotic cell; forms when part of the cell membrane surrounds the materials to be taken into the cell or transporte in the cell
pinocytosis
a method of active transport across the cell membrane in which the cell takes in extra cellular fluids
phagocytosis
the process by which a cell engulfs large particles of whole cells either as a defense mechanism or a means to obtain food
phagocyte
a cell that ingests and destroys foreign matter or micro organisms
exocytosis
the process by which a substance is released from the cell through a vesicle that transports the substance to the cell surface and then fuses with the membrane to let the substance out