Microbiology MCQs (Quiz 10) Posted on June 9, 2026June 10, 2026Author agropublishers 0 1. The active ingredient in most household bleach products is _____________ Sodium hypochlorite Hydrogen peroxide Phenol Ethanol 2. Which of the following diseases has been greatly reduced through chlorination of water supplies? Cholera Influenza Rabies Malaria 3. The protein coat surrounding viral nucleic acid is called the _____________ Envelope Capsid Nucleoid Cell wall 4. In microorganisms, enzyme photolyase is involved in _______________ Cell wall synthesis ATP production Repair of thymine dimers Protein degradation 5. If agar were highly reactive with medium components, what would be a likely consequence in microbiology? Difficulty interpreting microbial growth responses Complete inhibition of colony formation Improved sterilization efficiency Increased melting temperature 6. _____________________ is the branch of microbiology that deals with the study of fungi Parasitology Bacteriology Virology Mycology 7. Which statement correctly describes agar’s thermal properties? Melts at 37°C and solidifies at 20°C Melts and solidifies at the same temperature Melts at 42°C and solidifies at 100°C Melts near 85–100°C and solidifies near 40–45°C 8. Considering microorganisms, filtration is particularly useful for sterilizing ____________ Culture media containing agar Heat-sensitive liquids Glassware Metal instruments 9. Prokaryotic ribosomes differ from eukaryotic ribosomes because prokaryotes possess _____________ 50S ribosomes 70S ribosomes 80S ribosomes 30S ribosomes 10. Viruses are best described as _______________ Eukaryotic cells Single-celled organisms Acellular infectious agents Prokaryotic cells Loading … Question 1 of 10 Microbiology MCQs (Quiz 10)
