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