Across
- 2. sterilization does this to bacteria
- 4. type of relationships between soybeans and Rhizobium nodules
- 7. slows down the growth of bacteria
- 8. discovered penicillin
- 9. amino acids need this element
- 10. acids building blocks of proteins
- 13. these produce antibodies when injected into the human body
- 14. this device sterilizes using great heat and great pressure
Down
- 1. the killing of bacteria through the use of chemicals
- 2. these recycle nutrients
- 3. the process where nitrogen is changed into ammonia
- 5. these block the growth and reproduction of bacteria
- 6. developed germ theory
- 11. human waste, discarded food & chemical waste are collectively known as this
- 12. the type of bacteria in our intestines