Exocytosis:

It is the process through which bulky materials are exported.

Steps involved in Exocytosis:

Exocytosis occurs in the following steps:

1. The bulky material is packed inside a membrane and a vesicle is formed.
2. The vesicle moves out to the cell membrane
3. The vesicle fuses with the membrane and releases its contents into the extracellular environment.

Functions of Exocytosis:

This process adds a new membrane, which replaces the part of the cell membrane lost during endocytosis.