Endocytosis is the Reverse of Exocytosis and Pinocytosis is the Reverse

Question

Endocytosis is the reverse of exocytosis and pinocytosis is the reverse of phagocytosis.

Accepted Answer

Endocytosis and exocytosis are related but opposite processes where endocytosis involves the cell taking in substances, and exocytosis involves the cell expelling substances. Pinocytosis and phagocytosis are both types of endocytosis, not opposites; pinocytosis is the ingestion of liquid into a cell by the budding of small vesicles, and phagocytosis is the ingestion of larger particles or cells.