Endocytosis:

It is a special type of movement of material across the cell membrane. In endocytosis, bulky materials, rather than individual molecules, are moved across the cell membrane.

Steps involved in Endocytosis:

Endocytosis occurs in the following steps:

1. A portion of the cell membrane invaginates (depressed inward).
2. The material from the outside is taken inside the invagination.
3. The open ends of the invagination seal form a small vesicle.
4. The vesicle detaches from the cell membrane and moves into the cytoplasm.

Types of Endocytosis:

The two forms of Endocytosis are phagocytosis (cellular eating) and pinocytosis (cellular drinking). In phagocytosis, the cell takes in solid material while in pinocytosis cell takes in liquids in the form of droplets.