Across
- 4. carries blood to the heat
- 6. molecules that fit into enzyme for a reaction
- 8. thin vessels that carry blood throughout the body
- 11. remove waste
- 12. bags that are filled with oxygen when inhaling
- 13. carries blood away from the heart
- 14. proteins that speed up chemical reactions
Down
- 1. filters salt, urea, and excess water from blood
- 2. carries oxygen to body cells and carbon dioxide to lungs
- 3. tube that carries food from mouth to stomach
- 5. filters toxins and dead red blood cells from blood
- 7. eliminates germs
- 9. a number from 0 to 14; less than 7 means acidic; greater than 7 means basic
- 10. the spot where enzyme and substrate fit