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Chapter 5 Section 2
ch 5 sec 2
Term | Definition |
---|---|
active transport | the movement of materials from an area of lower concentration to an area of higher concentration |
sodium potassium pump | a protein that transports Sodium positive ions and Potassium positive ions up their concentration gradients |
endocytosis | the process by which cells ingest external fluid, macromolecules, and large particles |
vesicle | a small cavity or sac that contains materials in a eukaryotic cell |
pinocytosis | the transport of solutes or fluids |
phagocytosis | the movement of large particles or whole cells |
phagocyte | cells that allow lysosomes to fuse with the vesicles that contain the ingested bacteria and viruses |
exocytosis | process by which a substance is released from the cell through a vesicle that transports the substance out of the cell |