Across
- 1. the "H" in H2O
- 4. two or more atoms held together by a chemical bond
- 7. one of the things needed for cellular respiration
- 8. an organism that cannot makes it's own food, also known as a consumer
- 12. the basic particle from which all elements are made
- 13. the name for the chemical symbol H20
- 14. cellular respiration begins in this part of the cell
- 15. the part of a plant that takes in carbon dioxide
- 17. the process by which cells break down glucose
- 20. the organelle where cellular respiration primarily takes place
- 23. an organism that makes its own food, also known as a producer
Down
- 2. one of the things needed for cellular respiration
- 3. the process by which food is broken down both mechanically and chemically
- 5. the process in which plants use light to make energy
- 6. this carries oxygen from our lungs to our cells
- 9. a substance which cannot be broken down in to any other substances
- 10. type of respiration not involving oxygen
- 11. dioxide the name for the chemical symbol CO2
- 15. nearly all energy on Earth comes from this
- 16. type of respiration involving oxygen
- 18. this makes up about 78% of the air we breathe
- 19. something that is produced during a chemical reaction
- 21. something that undergoes a change during a chemical reaction
- 22. ATP is a form of energy