Across
- 3. The process of getting, using, and releasing energy from food in the body.
- 4. A molecule that is the main source of energy for cells.
- 5. System The body system that breaks down food into smaller molecules, such as glucose and amino acids.
- 7. System The body system that brings oxygen into the body and removes carbon dioxide.
Down
- 1. System The body system that transports molecules like oxygen and glucose through the blood to all cells.
- 2. Acid A molecule that is the building block of proteins.
- 6. A molecule found in the air that cells use to release energy from food.