Across
- 2. The protein in RBCs that carries oxygen.
- 7. The end-product of glycolysis.
- 11. Blood vessels carrying blood away from the heart
- 12. Tissue that moves water and minerals upward.
- 13. Known as the "energy currency" of the cell.
- 14. Respiration that happens without oxygen.
- 15. six-carbon molecule — starting point of respiration.
- 16. blood vessels that return blood to the heart; have valves.
- 17. loss of water vapour from aerial parts of plants.
- 19. Tiny air sacs where gas exchange occurs.
- 21. upper chamber of the heart
Down
- 1. Lower chamber of heart
- 3. acid causes muscle cramps when oxygen is lacking.
- 4. Anaerobic breakdown of glucose in yeast
- 5. Cell fragments that help blood to clot.
- 6. main artery carrying oxygenated blood from the heart.
- 7. Tissue that transports products of photosynthesis.
- 8. pores in plant leaves through which gases are exchanged.
- 9. smallest blood vessels with one-cell-thick walls.
- 10. Branches of trachea entering lungs
- 18. The liquid part of blood transporting CO2 and nutrients.
- 20. Organ where exchange of gases takes place in humans.