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: A zoonotic disease is transmitted from
A) Water to humans
B) Humans to humans
C) Animals to humans
D) Humans to plants
Q: The viral disease characterized by hydrophobia is
A) Hepatitis A
B) Influenza
C) Polio
D) Rabies
Q: Bacteria capable of surviving extreme heat are classified as
A) Acidophiles
B) Mesophiles
C) Psychrophiles
D) Thermophiles
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
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
Q: The stain most suitable for visualizing bacterial capsules is
A) Acid-fast stain
B) Endospore stain
C) Gram stain
D) Negative stain
Q: Virulence factors in bacteria include
A) Mitochondria
B) Adhesins and toxins
C) Ribosomes
D) Peptidoglycan
Q: The portal of entry for most respiratory infections is the
A) Bloodstream
B) Gastrointestinal tract
C) Mucous membranes
D) Skin
Q: The primary immune cells involved in phagocytosis are
A) Basophils
B) Neutrophils and macrophages
C) Platelets
D) Erythrocytes
Q: Gram-positive cocci arranged in chains are characteristic of
A) Staphylococcus
B) Escherichia
C) Streptococcus
D) Neisseria