- Inside cells chemical reactions happen.
- Molecules are being built up, broken down, and used for energy.
- Metabolism is the word used to describe all of these chemical reactions.
Building, demolishing, and making energy
Inside cells, chemical reactions are continuously happening. These chemical reactions are needed to convert the food we eat into molecules that are useful for the cells. Molecules are constantly being broken down, rearranged, and built-up.
Cells also use chemical reactions to extract energy from the food we eat.
The word metabolism is used to describe all of these chemical reactions.