Across
- 1. Scientist who postulated the steps needed to determine if a microorganism is the cause of a disease
- 4. Viruses are not made of these, making viruses nonliving.
- 6. Last name of the doctor who disproved the longstanding theory of what causes illness
- 9. Virus that attacks bacteria
- 12. The infectious disease suspected to have killed an Egyptian Pharaoh
- 14. A small, infectious agent made of nucleic acid and protein
- 15. The viral infection cycle which involves immediate destruction of the host cell
- 16. Accepted scientific explanation for how disease is caused and transmitted
- 17. lipid outer membrane found in some viruses
- 19. Any microbe capable of causing disease
- 21. The act of heating a liquid to kill off any microorganisms
- 22. Weakened form of a virus which can create immunity
- 25. Which is larger? Virus or Bacteria
Down
- 2. The protein coat which surrounds a virus
- 3. Disease which killed up to 200 million people in Eurasia and Africa during the middle ages
- 5. Needed by a virus in order to reproduce
- 7. Viral disease which is the only disease ever to have been fully eradicated
- 8. The theory that illnesses are caused by "bad air" or "vapors"
- 10. A bacterial chromosome which has had the viral genetic code incorporated into it
- 11. A prokaryotic organism which, like viruses, is able to cause disease and illness in living things
- 13. Viral infection/replication cycle which does not immediately destroy the host cell
- 18. The study of patterns and distribution of disease
- 20. Doctor who created the first version of a vaccine
- 23. Pandemic which infected one third of the earth's population
- 24. This was contaminated with pathogens and causing illness in the people of London