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Vocabulary 5.2

Terms for chapter five section two: Modern Biology

QuestionAnswer
active transport the movement of materials up the concentration gradient.
sodium-potassium pump a carrier protein involved in active transport in animal cells. this protein transports Na+ ions and K+ ions up their concentration gradient.
endocytosis the process by which cells ingest external fluis, marcomolecules, and large particles, including other cells.
vesicle a membrane bound organelle that can fuse with lysosomes in some cases, and then their contents are are digested by lysosomal enzymes.
pincocytosis type of endocytosis that involves the transport of solutes or fluids
phagocytosis the movement of large particles or whole cells.
phagocytes the cells in animals that use phagocytosis to ingest bacteria and viruses that enter the body.
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 of the cell. (reverse of endocytosis)
Created by: DouglasI16
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