Across
- 3. The part of the cell where aerobic respiration happens (13)
- 4. A liquid waste product made in aerobic respiration (5)
- 7. A substance made in anaerobic respiration in animals (6,4)
- 8. Pain caused by a build-up of lactic acid in muscles (5)
- 10. The alcohol made during fermentation (7)
- 12. The storage form of glucose in animals (8)
- 14. A waste product formed from breaking down excess proteins (4)
- 15. Tissues in the body that contract and need energy during exercise (7)
- 17. The type of respiration that uses oxygen to release energy (7,11)
- 19. The name for anaerobic respiration in yeast cells (12)
- 20. A nutrient that can be broken down for energy or stored (3)
- 21. Proteins that speed up reactions in the body including respiration (7)
Down
- 1. The gas needed for aerobic respiration (6)
- 2. A substance made by the liver that helps to digest fats by emulsifying them (4)
- 5. Respiration without oxygen that releases less energy (9,11)
- 6. How many times the heart beats per minute (5,4)
- 9. All the chemical reactions happening in the body (10)
- 11. The sugar broken down in respiration to release energy (7)
- 13. The amount of oxygen needed to break down lactic acid after exercise (6,4)
- 16. A waste gas produced during aerobic respiration (6,7)
- 18. How many breaths are taken per minute (8,4)