Microbiology Questions with Answers for Medical Science Exams | Page 2

Microbiology questions with answers are essential for students preparing for competitive medical exams like AIIMS, NEET, and UPSC Medical Services. These questions test your understanding of microorganisms, their structure, function, and role in diseases. Mastering microbiology helps in building a strong foundation for clinical studies and research-based careers. Practicing interview questions and placement papers related to microbiology allows aspirants to evaluate their conceptual clarity and application skills. In this section, we provide topic-wise microbiology questions with explanations that help you prepare effectively for exams and interviews in the field of medical science.

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Q11

Which organelle is absent in prokaryotes?

A Ribosomes
B Cell membrane
C Mitochondria
D Cell wall

Answer: Option C

Explanation: Mitochondria are absent in prokaryotic cells.

Q12

Which bacteria are used in yogurt production?

A E. coli
B Lactobacillus bulgaricus
C Bacillus subtilis
D Staphylococcus aureus

Answer: Option B

Explanation: Lactobacillus bulgaricus and Streptococcus thermophilus are used in yogurt.

Q13

Which process converts atmospheric nitrogen into usable form?

A Photosynthesis
B Nitrogen fixation
C Fermentation
D Respiration

Answer: Option B

Explanation: Nitrogen fixation by bacteria like Rhizobium makes nitrogen available to plants.

Q14

Which bacteria is responsible for plague?

A Salmonella typhi
B Yersinia pestis
C Vibrio cholerae
D Clostridium tetani

Answer: Option B

Explanation: Yersinia pestis is the causative agent of plague.

Q15

Which bacteria causes cholera?

A Salmonella
B Vibrio cholerae
C Shigella
D Clostridium botulinum

Answer: Option B

Explanation: Vibrio cholerae is the causative agent of cholera.

Q16

Which bacteria is known as “flesh-eating bacteria”?

A E. coli
B Streptococcus pyogenes
C Klebsiella pneumoniae
D Pseudomonas aeruginosa

Answer: Option B

Explanation: Streptococcus pyogenes is known as flesh-eating bacteria.

Q17

Which virus causes chickenpox?

A Herpes simplex virus
B Varicella-zoster virus
C Epstein-Barr virus
D Cytomegalovirus

Answer: Option B

Explanation: Varicella-zoster virus causes chickenpox.

Q18

Which protozoa causes malaria?

A Trypanosoma
B Plasmodium
C Entamoeba
D Giardia

Answer: Option B

Explanation: Plasmodium species cause malaria.

Q19

Which fungus causes athlete’s foot?

A Candida albicans
B Trichophyton
C Aspergillus
D Rhizopus

Answer: Option B

Explanation: Trichophyton species cause athlete’s foot (tinea pedis).

Q20

Which bacteria causes tetanus?

A Clostridium tetani
B Clostridium botulinum
C Clostridium perfringens
D Bacillus anthracis

Answer: Option A

Explanation: Clostridium tetani produces toxins that cause tetanus.

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Microbiology Questions and Answers

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