Across
- 2. Required for photosynthesis
- 6. A substance found in living things that speeds up chemical reactions
- 7. A living thing
- 9. One of the waste products of respiration
- 11. The cells structure in which photosynthesis occurs
- 13. Group of tissues working together
- 14. The cell structure in which respiration occurs
- 16. Basic unit of all living things
- 17. Group of organs working together
- 19. This is released during respiration
- 20. Liquid used to transport food, oxygen and waste around the body.
Down
- 1. Gas produced during photosynthesis
- 2. Goes milky in the presence of carbon dioxide
- 3. The release the energy from food
- 4. Group of organisms of the same species
- 5. Energy is released from this during respiration
- 8. The movement of oxygen from the blood into the cells
- 10. Food produced during photosynthesis
- 12. Green chemical used to trap sunlight in plant cells
- 15. The breakdown of food into small particles so that it can enter the blood
- 18. Group of similar cells with a specific task