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