Exocytosis involves A) the ingestion of large organic molecules or organisms. B) the use of ATP. C) the uptake of fluids from the environment. D) the discharge of materials from cellular vesicles.

Exocytosis involves:<br /><br />**D) the discharge of materials from cellular vesicles.**<br /><br />In exocytosis, cells transport molecules out of the cell by packaging them in vesicles that fuse with the plasma membrane and release their contents into the extracellular space.