RUHS
Second Year MBBS Examination
MBBS MICROBIOLOGY PAPER I
Time: 3 hours Max Marks: 40
Date: 14-07-2019

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Instructions: Instructions: Question 1 in Section A and Question 5 in Section B are
Compulsory. Attempt any two questions from rest of the questions in each section.
(Use separate answer sheet for each section)
Section 1
1. What is cytokines? Discuss the mechanism of cell medicated immunity in

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details.
(10)
2. Write short note on :
a. Bacterial cell wall(A. 17)
(5)

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b. Autoclave principle & uses(A. 29,31,33)
3. Write briefly on:
a. Laboratory diagnosis of diphtheria(A. 239)
(5)
b. Significant bacteriuria(A. 278)

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4. Write short note on:
a. Stormy fermentation
b. R factor
c. Classify chemical disinfectant(A. 33)
d. Dienes phenomenon

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e. Principle of oxidase test
(5)
Section 2
5. Enumerate the causes of PUO & discuss in detail the laboratory diagnosis.
12

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6. Write short note on:
a. Mechanism of tetanus toxin
(5)
b. ETEC
7. Write briefly on:

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a. LGV
(5)
b. Mechanism of autoimmunity

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8. Write short note on:
a. BCG vaccine

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b. Plasmid (A. 18)
c. Transport media(A. 43)
d. IgA antibody
e. Transfer factor
(5)

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