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: A zoonotic disease is transmitted from
A) Water to humans
B) Humans to humans
C) Animals to humans
D) Humans to plants
✅ Correct Answer: C
Explanation: Zoonotic diseases are infections that are naturally transmitted from animals to humans.
Q: The viral disease characterized by hydrophobia is
A) Hepatitis A
B) Influenza
C) Polio
D) Rabies
✅ Correct Answer: D
Explanation: Rabies virus infects the central nervous system and often causes fear of water (hydrophobia) during later stages.
Q: Bacteria capable of surviving extreme heat are classified as
A) Acidophiles
B) Mesophiles
C) Psychrophiles
D) Thermophiles
✅ Correct Answer: D
Explanation: Thermophiles thrive in high-temperature environments such as hot springs or autoclaves.
Q: A growth medium designed to distinguish between different organisms based on metabolic activity is called
A) Minimal medium
B) Differential medium
C) Complex medium
D) Selective medium
✅ Correct Answer: B
Explanation: Differential media allow visual differentiation of organisms based on biochemical reactions, such as pH changes.
Q: The KOH test is used to detect
A) DNA synthesis
B) Gram-negative bacteria
C) Fungal elements in skin scrapings
D) Acid-fast bacilli
✅ Correct Answer: C
Explanation: The KOH preparation dissolves cellular material and leaves fungal elements visible under the microscope.