Biology terminology

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Across
  1. 4. Oxygen free
  2. 6. Energy
  3. 7. Gland
  4. 9. Powerhouse
  5. 10. Sugar
  6. 14. fluid
  7. 16. Hormone
  8. 18. colour light
  9. 20. Neutral
Down
  1. 1. Signals
  2. 2. Blood sugar
  3. 3. Breathing
  4. 5. Genetic
  5. 8. Green
  6. 11. Protein
  7. 12. Sensors
  8. 13. storage
  9. 15. Starch
  10. 17. Control
  11. 19. Hormonal