Microbiology MCQs (Quiz 3) Posted on June 7, 2026June 10, 2026Author agropublishers 0 1. The structure observed by Robert Hooke in cork was actually _____________ Animal cells Bacterial colonies Living plant cells Dead cell walls 2. Which instrument is used to sterilize culture media and laboratory equipment using high-pressure steam? Microscope Incubator pH meter Autoclave 3. The most commonly used microscope in microbiology laboratories is _______________ Fluorescence microscope Bright-field microscope Electron microscope Dark-field microscope 4. ______________ is the instrument used to magnify small objects Microscope Spectrophotometer Centrifuge Autoclave 5. Which bacterial structure is selectively permeable? Cell wall Plasma membrane Flagellum Capsule 6. Which of the following correctly pairs a microorganism with the branch of microbiology that studies it? Influenza virus — Bacteriology Plasmodium falciparum — Phycology Escherichia coli — Virology Saccharomyces cerevisiae — Mycology 7. Magnification refers to ___________________ Degree to which an image is enlarged Brightness of image Size of specimen Ability to distinguish two points 8. Which of the following is NOT a branch associated with microbiology? Virology Bacteriology Geology Mycology 9. The standard sterilization cycle in an autoclave is generally ______°C, for _______minutes and at________ pounds per square inch (psi). 80°C for 5-10 minutes at 10 psi 100°C for 5-10 minutes at 5 psi 60°C for 20-30 minutes at 15 psi 121°C for 15–20 minutes at 15 psi 10. The major component of bacterial cell walls is _______________ Chitin Lignin Peptidoglycan Cellulose Loading … Question 1 of 10 Microbiology MCQs (Quiz 3)
