What are Cells?

Every living thing, from the tiniest bacteria to the largest whale, is made up of cells. Cells are the smallest units of life that can carry out all the basic functions needed to survive.

Types of Cells

There are two main types of cells:

• Prokaryotic cells: Simple cells without a nucleus (like bacteria)
• Eukaryotic cells: More complex, with a nucleus and organelles (like plants, animals, and fungi)

Why Are Cells Important?

Cells work together in groups to form tissues, organs, and entire organisms. They help us grow, heal, and carry out all the activities that keep us alive.

Real-World Connection

When you get a cut, your body uses cells to repair the wound. Even the food you eat is made up of living cells!