Across
- 3. a one-celled prokaryotic microorganism that lacks a nucleus
- 4. drugs that fight off bacteria
- 5. microorganisms that cause disease
- 7. he proposed the germ theory of disease
- 10. a strict order of isolation in order to prevent the spread of a disease
- 12. the first doctor who realized that handwashing helped to prevent contagious diseases
Down
- 1. a contagious illness that is prevalent in one part of the world
- 2. an inactive part of the pathogen that helps prevent a disease
- 6. proteins that provide immunity to a disease
- 8. when an animal has the white blood cells to destroy a pathogen
- 9. a contagious disease that has spread worldwide
- 11. a microscopic non-living thing that reproduces by infecting an organism