Across
- 3. site Also known as lock and key
- 5. Most important gas to the body
- 6. The processing centre
- 8. Happens in the blood vessels when temperatures are high
- 11. a form of protein in the body
- 13. Keeping a steady state in the body
- 16. Feedback Brings the body back to its normal state
- 17. A harmful substance found in urine
- 19. happens to enzymes at 37 degrees
Down
- 1. Controls water levels in the body
- 2. centre receives and processes information
- 4. Happens to the blood vessels when temperatures are low
- 5. Happens across a partially permeable membrane
- 7. a hormone found in the pituitary gland
- 9. An artificial for of negative feedback
- 10. A way of releasing energy
- 12. contain a nucleus and found everywhere inside the body
- 14. A level that enzymes work best at
- 15. Is a key factor in denaturing and health
- 18. level an element that has to be kept steady