Virology MCQs (Quiz 2) Posted on July 10, 2026Author agropublishers 0 1. Viroids differ from viruses because they ___________________________ Replicate independently Consist solely of small circular RNA without a protein coat Possess a lipid envelope Contain DNA only 2. Enzyme _________________ is essential for replication of retroviruses Reverse transcriptase DNA ligase RNA polymerase II DNA gyrase 3. ________________________ carries its own RNA-dependent RNA polymerase inside the virion Coronavirus Parvovirus Poliovirus Rabies virus 4. __________________ is the primary genetic material in viruses Proteins Primarily RNA Primarily DNA Either DNA or RNA 5. Which virus establishes lifelong latency in sensory ganglia? Rotavirus Influenza virus Poliovirus Herpes simplex virus 6. Small DNA viruses generally replicate their genomes using _____________ Host RNA polymerase Viral RNA polymerase Host-cell DNA polymerase Reverse transcriptase 7. Tobacco Mosaic Disease played a key role in the discovery of _________________ Bacteria Algae Fungi Viruses 8. The Baltimore classification groups viruses according to ______________________ Capsid symmetry Mechanism of mRNA synthesis Disease produced Host range 9. Which virus possesses a segmented negative-sense RNA genome? Coronavirus Influenza A virus Rabies virus Poliovirus 10. Viruses are generally visible only with the help you ___________ microscope Phase-contrast Electron Fluorescence Compound light Loading … Question 1 of 10
