LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION - BIOMED.INSTRUMENTATION SC.
SECOND SEMESTER – APRIL 2011
BI 2953 - MICROBIAL TECHNOLOGY
Date : 11-04-2011
Time : 9:00 - 12:00
Dept. No.
Max. : 100 Marks
Section – A
Answer ALL questions
(10 X 2 = 20 Marks)
1. Define hospital acquired infection.
2. Distinguish between thermophiles and halophiles.
3. Give the principle involved in Grams staining.
4. Name a few healthy microflora in human host.
5. Comment on any two physical and chemical agents in the control of microbial infection.
6. What are the characteristics and causative agents of enteric fever and tetanus.
7. Give examples of carbon source used in any fermentation media.
8. Define the Bacterial Growth curve.
9. What are proteases?
10. Write the names of Organisms used for production of penicillin and streptomycin.
Section – B
Answer any Four questions
(4 X 10 = 40 Marks)
11. Write an account on microbial contaminants of sea food.
12. Explain the principle of and procedure involved in Grams staining and Acid fast staining.
13. Explain the morphology, etiology and pathogenicity of Staphylococcus aureus.
14. Explain how we can control and monitor a fermentation process.
15. Write in detail the production of B12 and Q-carotene.
16. Elaborate how are organic acids produced by Microorganisms.
Section – C
Answer any TWO questions
(2 X 10 = 20 Marks)
17. Give a detailed account of types of sterilization and comment on the advantages of
each method.
18. Write an essay on immune response.
19. Write in detail the production of any two microbial Enzymes.
20. Explain how to design a fermentation process.
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