Download KNRUHS MBBS 2nd Year MB2019115 Microbiology Paper I _Aug 2025 Question Paper

PAPER CODE: MB2019115
KALOJI NARAYANA RAO UNIVERSITY OF HEALTH SCIENCES
WARANGAL, TELANGANA STATE ? 506 002
MBBS SECOND YEAR DEGREE EXAMINATIONS: AUGUST,2025

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MICROBIOLOGY
PAPER ?I
Time: 3 Hours

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Max Marks: 100
Note: Answer all questions
Give Diagrammatic representation wherever necessary

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Multiple Choice Questions: 10 X 1 = 10
1. Endoscopes are sterilized using which of the following methods?


a) Glutaraldehyde

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b) Formaldehyde

c) Autoclaving
d) Hot air oven

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2. Which of the following is a primary lymphoid organ?

a) Spleen
b) Mucosa associated Lymphoid

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Tissue
c) Thymus
d) Tonsils

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3. African sleeping sickness is caused by

a) Leishmania donovani
b) Trypanosoma brucei

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c) Trypanosoma cruzei
d) Trypanosoma rangeli

4. Which is more antigenic in inducing immune response

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a) Nucleic acid
b) Carbohydrate

c) Protein

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d) Lipid

5. Which of the following hepatitis viruses is not transmitted parenterally?

a) Hepatitis B virus

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b) Hepatitis D virus

c) Hepatitis C virus
d) Hepatitis E virus

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6. The most common mode of transmission of Brucella is


a) Direct contact
b) Air borne

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c) Man to man
d) Ingestion of raw milk

7. Which one of the following methods of antimicrobial susceptibility testing does

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not detect MIC (minimum inhibitory concentration)?
a) Disk Diffusion test
b) Broth Dilution method

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c) Agar Dilution method
d) Epsilometer test

8. Rate of infection occurring at a higher rate than usual in a particular

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geographical area is known as
a) Epidemic
b) Pandemic

c) Hyper endemic

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d) Sporadic

9. Prozone phenomenon in Ag Ab reaction is due to

a) Excess antibodies

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b) Excess antigen

c) Hyperimmune serum
d) Complement excess

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10. Which of the following is not a potentially highly infectious specimen for

occupational injury in health care settings
a) Blood
b) CSF

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c) Saliva
d) Semen

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Essay/ Long Answer Questions:

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2 X 15 = 30
11. Enumerate the properties and types of Antigen- Antibody Reaction. Describe in
detail about the principle, types and applications of ELISA. (6+2+4+3)
12. Discuss in detail the laboratory diagnosis of Viral Infections. (15)

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Short Answer Questions:


7 X 6 = 42

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13. Amoebic Liver Abscess.
14. Mechanism of Antibiotic Resistance.
15. Stool concentration techniques.
16. Graft versus Host Reaction.
17. Post exposure Prophylaxis for HIV.

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18. Q Fever.
19. Kyasanur Forest Disease.

Very Short Answer Questions:

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6 X 3 = 18
20. Adjuvants.
21. Dimorphic Fungi.
22. Germ Tube.

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23. Name three Tumour associated Antigens.
24. Classification of Arbo Viruses.
25. Name three diseases caused by Superantigens.
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