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chapter 5 section 2

active transport

active transport the movement of materials from an area of lower concentration to an area of higher concentration
sodium- potassium pump a carrier protein that transports salt and potassium ions up the concentration gradients
endocytosis the process by which cells ingest external fluid, macromolecules, and large particles, including other cells
vesicle the pouch that pinches off from the cell membrane and becomes a membrane- bound organelle
pinocytosis the transport of solutes or fluids
phagocytosis the movement of large particles or whole cells
phagocyte allow lysosomes to fuse with the vesicles that contain the ingested bacteria and viruses.
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
Created by: campbellm19