These processes involve the transport of large molecules or particles into and out of the cell via vesicles.
Endocytosis: The process by which the cell membrane engulfs extracellular material, forming a vesicle. Types include phagocytosis ("cell eating") and pinocytosis ("cell drinking"). Exocytosis: The process by which vesicles within the cell fuse with the plasma membrane to release their contents outside the cell.
