Microbiology MCQs (Quiz 11) Posted on June 9, 2026June 10, 2026Author agropublishers 0 1. Exposure to UV light may prevent bacterial reproduction because it _________________ Interferes with DNA replication Inhibits respiration Destroys endospores Removes capsules 2. Which of the following viral structures is responsible for host cell recognition and attachment? Capsid Matrix protein Nucleic acid Envelope and/or capsid proteins 3. Agar considered an ideal solidifying agent for microbiological media, because ________________ It readily reacts with culture medium components It contains natural antibiotics that suppress contaminants It serves as the primary nutrient source for most bacteria It is chemically inert and does not significantly affect microbial growth 4. Immunology is primarily concerned with the study of __________________ Genetic inheritance Microbial classification Cell division Immune system and its responses 5. The antimicrobial activity of chlorine is mainly due to the formation of ________________ Nitric acid Hydrogen peroxide Sulfuric acid Hypochlorous acid 6. _______________ is the most commonly used method for sterilizing antibiotic solutions Membrane filtration Boiling Dry heat Autoclaving 7. Boiling water at 100 oC is ineffective for true sterilization because it may fail to destroy ___________ Vegetative bacterial cells Yeast cells Fungal hyphae Bacterial endospores 8. Which characteristic of agar most improves the reproducibility of microbiological experiments? Rapid biodegradation Chemical stability and inertness Antimicrobial properties High protein content 9. The reserve food material in fungi is primarily ________________ Cellulose Starch Glycogen Inulin 10. Filtration removes microorganisms from liquids primarily by __________________ Oxidizing cellular components Denaturing proteins Trapping microorganisms in filter pores Destroying DNA Loading … Question 1 of 10 Microbiology MCQs (Quiz 11)
