Microbiology MCQs
Microbiology MCQs cover bacteriology, virology, mycology, parasitology, and immunology, testing pathogen identification, microbial physiology, and infection control. Ideal for MDCAT, FCPS, NTS, and USMLE preparation, these quizzes boost academic knowledge, clinical skills, and exam success.
Q: Penicillin interferes with
A) Cell wall synthesis
B) Protein synthesis
C) DNA replication
D) RNA transcription
✅ Correct Answer: A
Explanation: Penicillin inhibits bacterial cell wall synthesis, leading to cell lysis.
Q: The term 'microbiology' was first used by
A) Antonie van Leeuwenhoek
B) Charles Cagniard-Latour
C) Louis Pasteur
D) Sedillot
✅ Correct Answer: D
Explanation: Sedillot coined the term microbiology to define the study of microscopic organisms.
Q: Staphylococcus aureus appears as
A) Pairs
B) Chains
C) Single cells
D) Clusters
✅ Correct Answer: D
Explanation: S. aureus typically appears as grape-like clusters of cocci.
Q: Salmonella is commonly associated with
A) Leprosy
B) Cholera
C) Diphtheria
D) Typhoid fever
✅ Correct Answer: D
Explanation: Salmonella typhi causes typhoid fever, a systemic bacterial infection.
Q: Autoclaving kills microbes using
A) Dry heat
B) Chemicals
C) UV light
D) Steam under pressure
✅ Correct Answer: D
Explanation: Autoclaving sterilizes equipment using pressurized steam at high temperature.