Across
- 4. Air sacs in the lungs that participate in gas exchange
- 5. Muscle pairs that work together to move your bones at a joint
- 8. Name of the muscles in your chest
- 9. Chemical used to test food for starch
- 10. Chemical that turns purple when protein is present
- 12. Protein molecules that help you digest your food (biological catalysts)
Down
- 1. Method of measuring lung volume
- 2. The scientific name for the bones in your spine
- 3. Microorganisms that make enzymes to help you digest food
- 6. Mineral needed to keep your bones strong and healthy
- 7. The largest bone in the body
- 11. Colour that Benedict's goes when there is a lot of sugar present in a food