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