MCQ Collection
General Microbiology MCQs
Practice General Microbiology questions with answers and explanations.
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Correct Answer: A. Biofilm
Explanation:
Biofilm is a structured microbial community embedded in a protective extracellular matrix on a surface.
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Correct Answer: A. Sterilisation
Explanation:
Sterilisation is complete destruction or removal of all forms of microbial life, including spores.
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Correct Answer: B. Disinfection
Explanation:
Disinfection is reduction of pathogenic microorganisms on inanimate objects, not necessarily including spores.
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Correct Answer: A. Nosocomial infection
Explanation:
Nosocomial infection is an infection acquired during healthcare delivery that was not present or incubating on admission.
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Correct Answer: B. Autoclave
Explanation:
Autoclave is a device that sterilises using saturated steam under pressure.
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Correct Answer: C. Gram-positive cocci
Explanation:
Gram-positive cocci is bacteria that retain crystal violet and appear purple because of a thick peptidoglycan wall.
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Correct Answer: A. Endospore
Explanation:
Endospore is a dormant resistant structure formed by selected bacteria such as Bacillus and Clostridium species.
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Correct Answer: B. Endospore
Explanation:
Endospore is a dormant resistant structure formed by selected bacteria such as Bacillus and Clostridium species.
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Correct Answer: A. Biofilm
Explanation:
Biofilm is a structured microbial community embedded in a protective extracellular matrix on a surface.
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Correct Answer: D. Sterilisation
Explanation:
Sterilisation is complete destruction or removal of all forms of microbial life, including spores.
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Correct Answer: C. Disinfection
Explanation:
Disinfection is reduction of pathogenic microorganisms on inanimate objects, not necessarily including spores.
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Correct Answer: C. IgM
Explanation:
IgM is the first major antibody isotype produced in a primary immune response.