cell
The cell is the basic unit of life. All known cells (except a few specialized cell types) have certain basic components in common:

• cytoplasm (the living substance which makes up most of the cell volume)

• DNA, the genetic information that acts as a blueprint for the other components.

• Proteins, the machinery of the cell.

• Membranes, which separate the cell form its environment, work as a filter, and act as a communication relay with the outside