Across
- 3. Single-celled microorganisms
- 5. Includes molds and mushrooms
- 7. Invasion of harmful microorganisms
- 11. Lives on or in a host
- 12. Body’s defense against disease
Down
- 1. Needs a host to reproduce
- 2. Causes disease in host
- 4. Can spread easily from person to person
- 6. Medicine that kills bacteria
- 8. Rapid spread of disease in a population
- 9. Single-celled eukaryotic organism
- 10. Prevents infectious diseases