Across
- 5. chemical reaction between oxygen and glucose
- 6. system that takes in oxygen and releases carbon dioxide
- 9. the smallest unit that can live on its own
- 11. carbon and oxygen
- 13. organisms can use to release energy
- 14. receives and sends messages from the body
- 16. interacting parts forming a complex whole
- 17. collection of tissues
Down
- 1. takes in food and breaks it down
- 2. system that transports molecules to and from all cells
- 3. group of atoms
- 4. a claim supported by evidence
- 7. building blocks of proteins aminoácidos
- 8. use of molecules for energy
- 10. atomic number of 8
- 12. molecules that perform important functions
- 15. many glucose molecules connected