M.Sc. DEGREE EXAMINATION, APRIL 2018
Second Semester
Biochemistry
MICROBIOLOGY AND IMMUNOLOGY
(CBCS 2017 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 X 2 20)
Answer all questions.
1. What is Archae?
2. Define Chemostat.
3. Write the salient characters of diatoms.
4. What are Viroids?
5. Define hapten.
6. What is allotype?
7. Define cytokines.
8. What is antibacterial immunity?
9. What is MHC?
10. Mention any four immunosuppressive agents.
Sub. Code
7MBC2C2
AFS-0592
2
Wk3
Part B X 5 25)
Answer all questions choosing either or
11. What is growth curve? Explain the phases of a
bacterial growth curve.
Or
Critically examine the nutritional requirements met
among microorganisms.
12. With a labelled sketch explain the morphology of
Paramecium.
Or
Enumerate the ways to control fungal growth.
13. Highlight on the functions of antibodies.
Or
Give an account on the cells of lymphoreticular
system.
14. Write short notes on Immuno tolerance.
Or
Distinguish between primary and secondary
immune response.
15. What is tumor antigen? Explain its types in brief.
Or
Comment on human lemocyte antigen.
AFS-0592
3
Wk3
Part C X 10 30)
Answer any three questions.
16. Describe in detail the structure of bacterial cell wall.
17. Discuss in detail the lytic and lysogenic cycle of virus.
18. Write an essay on central lymphoid organs.
19. Explain the innate defence mechanism of human body.
20. Elaborate on immediate hypersensitivity.
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