Microbiology MCQs
Microbiology MCQs challenge students to identify pathogens, understand microbial physiology, and master infection control protocols. These questions span bacteriology, virology, mycology, parasitology, and immunology. Suitable for exams like MDCAT, FCPS, NTS, and USMLE, these quizzes improve both academic knowledge and clinical readiness.
Q: Pasteurization aims to
A) Kill all microorganisms
B) Reduce microbial load
C) Sterilize liquids
D) Remove spores
Q: The Ziehl-Neelsen technique is used to detect
A) Endospore-forming bacteria
B) Spirochetes
C) Acid-fast bacteria
D) Gram-negative rods
Q: Opportunistic infections commonly affect individuals who are
A) Physically active
B) Immunocompromised
C) Anemic
D) Overweight
Q: Infections acquired in a hospital setting are referred to as
A) Zoonotic infections
B) Nosocomial infections
C) Community-acquired infections
D) Endemic infections
Q: The bacterial genome is usually composed of
A) Linear DNA
B) Circular DNA
C) Double-stranded RNA
D) Multiple chromosomes
Q: Antibiotics targeting cell wall synthesis are ineffective against
A) Gram-positive bacteria
B) Viruses
C) Fungi
D) Gram-negative bacteria
Q: Streptococcus pyogenes is classified under
A) Spore-forming bacteria
B) Acid-fast rods
C) Gram-positive cocci
D) Gram-negative bacilli
Q: The vector responsible for transmitting Lyme disease is the
A) Flea
B) Louse
C) Tick
D) Mosquito
Q: The main component of the bacterial cell wall is
A) Chitin
B) Cellulose
C) Lipopolysaccharide
D) Peptidoglycan
Q: Tetanus is caused by a toxin released by
A) Clostridium tetani
B) Vibrio cholerae
C) Bacillus anthracis
D) Escherichia coli