Vesicle

Definition

A vesicle is a small, membrane-bound compartment within a cell that contains materials involved in various cellular processes.

Related terms

Endocytosis:

This is a process where cells absorb material (like proteins) from outside by engulfing it with their cell membrane, forming a vesicle.

Exocytosis:

This is the opposite of endocytosis. It's when cells expel waste or secrete substances contained in vesicles out into their environment.

Lysosome:

These are special types of vesicles that contain enzymes to break down waste materials and cellular debris inside the cell.