Across
- 3. group of atoms
- 4. large molecules with an important role
- 8. breaks down food
- 10. a group of tissues
- 12. carbon and oxegen molecules
- 13. made of many glucose molecules connected
- 15. molecule used to release energy
- 16. transports molecules to the body
- 17. a gas you breathe in
Down
- 1. releases energy into cells
- 2. molecules of energy in the body
- 5. takes in oxegen and releases carbon dioxide
- 6. protein molecules
- 7. receives and sends messages to the brain
- 9. a set of parts to form a complex whole
- 11. a small unit that lives on its own
- 14. a claim backed up with evidence