Microbiology MCQs (Quiz 20) Posted on June 11, 2026Author agropublishers 0 1. Small circular DNA molecules in bacteria are called __________________ Transposons Plasmids Operons Chromosomes 2. Influenza virus belongs to the family ___________ Orthomyxoviridae Retroviridae Hepadnaviridae Flaviviridae 3. Hepatitis C virus is transmitted primarily through _____________________ Airborne spread Exposure to infected blood Insect bites Fecal-oral route 4. The genetic material of a bacterial cell is located in the _______________ Mitochondrion Nucleus Nucleoid Golgi apparatus 5. HIV belongs to the family of ________________ Orthomyxoviruses Adenoviruses Retroviruses Herpesviruses 6. _______________ virus is commonly causes seasonal flu HBV HCV HIV Influenza virus 7. HIV is transmitted through _______________ Contaminated water Airborne droplets Blood and body fluids Mosquito bites 8. The primary target organ of Hepatitis C Virus (HCV) is ________________ Liver Pancreas Spleen Brain 9. Influenza virus contains ______________ Single-stranded DNA Double-stranded RNA Double-stranded DNA Single-stranded RNA 10. The causative agent of AIDS (HIV) was discovered by ________________________ Luc Montagnier Alexander Fleming Robert Koch Louis Pasteur Loading … Question 1 of 10
