What is a cell?

A cell is the basic structural and functional unit of life. It is the smallest unit of a living organism that can perform all essential life processes such as metabolism, growth, and reproduction.

All living organisms are made up of cells. Some organisms are unicellular, consisting of a single cell, while others are multicellular, made up of many cells working together.

Each cell contains structures that carry out specific functions, such as controlling activities, producing energy, and maintaining internal balance.

Cells form tissues, tissues form organs, and organs form organ systems, making the cell the foundation of all biological organization.