Photosynthesis/Cellular Respiration Crossword

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