Cell

All the tissues of the body , including organs such as the heart, liver and breast, are composed of cells.

Cell and Nucleus

Nucleus

The nucleus is the control center of the cell. Hereditary materials (also called genes) are found in the nucleus. Hereditary means passed on in families.

Any trait passed from parents to children.
The brain of the cell. It tells every part of the cell what to do.
The basic building blocks of life. The smallest unit that can work on its own.
A group of cells that are the same and work together to make up parts of the body.