Question

Differentiate between exocytosis and endocytosis.

Answer 1

Definition

1. Endocytosis is a navigation of the cell surface to form an intracellular membrane-bounded vesicle containing extracellular fluid.
2. Exocytosis is the fusion of secretory vesicles with the plasma membrane.

Differences

Endocytosis	Exocytosis
1. Endocytosis is involved in the uptaking of substances from the external environment.	1. Exocytosis is involved in the elimination of waste and secretion of contents in golgi into the external environment.
2. Occurs by both phagocytosis and pinocytosis.	2. Occurs by the constitutive and regulated secretory pathway
3. Example is engulfing bacteria by phagocytes.	3. Example is releasing hormones out of the cell.