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