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