AP BIOLOGY

Detailed explanation-1: -Exocytosis is defined as the transport and fusion of secretory vesicles with the plasma membrane and the extracellular space.

Detailed explanation-2: -What is exocytosis? Exocytosis definition and purposes. Exocytosis is the process by which cells move materials from within the cell into the extracellular fluid. Exocytosis occurs when a vesicle fuses with the plasma membrane, allowing its contents to be released outside the cell.

Detailed explanation-3: -Exocytosis is the fusion of secretory vesicles with the plasma membrane and results in the discharge of vesicle content into the extracellular space and the incorporation of new proteins and lipids into the plasma membrane.

Detailed explanation-4: -Exocytosis is a multistage process involving a merger between the vesicle and the plasma membranes, leading to the formation of a fusion pore, a channel, through which secretions are released from the vesicle to the cell exterior.

Detailed explanation-5: -The fusion of the vesicles with the plasma membrane is called exocytosis. In this way, for example, cells produce and secrete most of the proteoglycans and glycoproteins of the extracellular matrix, which is discussed in Chapter 19. All cells require this constitutive secretory pathway.