DISTANCE EDUCATION
M.Sc. (Zoology) DEGREE EXAMINATION, DECEMBER 2017.
MICROBIOLOGY AND IMMUNOLOGY
Time Three hours Maximum 100 marks
PART A — × 8 40 marks)
Answer any FIVE questions.
1. List out with a note on the historical developments of
microbiology.
2. Illustrate the lytic cycle of bacteriophage.
3. Write about some important bacterial diseases of human
respiratory tract.
4. Distinguish between primary and secondary lymphoid
tissues/ organs with examples.
5. Elucidate the functions of IgM.
6. Explain the salient functions or innate defence system.
7. How will you classify hypersensitivity?
8. What is immunoprecipitation test? Explain the following
immunoprecipitation techniques:
Radial immunodiffusion
Ouchterlony immunodiffusion.
Sub. Code
23
DE-3060
2
Ws3
PART B — × 15 60 marks)
Answer any FOUR questions.
9. Make a detailed account on the working mechanism of
scanning electron microscopy and transmission electron
microscopy.
10. Describe the positive and negative effects of UV light on
microorganisms.
11. Explain various characteristic features of antigens with a
note on their relevance in elicitation of immune
responses.
12. Define vaccine. Give a chart for the childhood
immunization recommended by WHO.
13. Draw and describe the general structure of
immunoglobulin.
14. What is immunodeficiency disease? Draw and explain the
structure of HIV-1.
15. Define complement system. How does complement
system undergo activation through alternative pathway?
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