Virology MCQs (Quiz 1) Posted on June 20, 2026Author agropublishers 0 1. The first successful vaccine was developed against ____________ Polio HIV Tuberculosis Smallpox 2. Viruses are generally measured in ___________ Centimeters Nanometers Micrometers Millimeters 3. Viruses became visible after the invention of the _______________ Light microscope Electron microscope Compound microscope Fluorescence microscope 4. Viruses are classified as _______________ Eukaryotic Multicellular Prokaryotic Acellular 5. _____________ are viruses that infect bacteria Viroids Mycoviruses Retroviruses Bacteriophages 6. Virology is a branch of _________________ Botany Ecology Microbiology Zoology 7. Scientist _____________________ concluded that viruses multiply only within the living cells Lois Pasteur Frederick William Twort Robert Koch Martinus Beijerinck 8. The term “virus” originates from a Latin word vīrus meaning ________________ Epidemic Disease Infection Poison 9. Virology is the branch of science that studies _____________ Algae Fungi Viruses Bacteria 10. ______________________ was the first human virus identified Rabies virus HIV Yellow Fever Virus Hepatitis B virus Loading … Question 1 of 10