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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
B.Sc. DEGREE EXAMINATION PLANT BIOLOGY AND PLANT BIOTECHNOLOGY
THIRD SEMESTER NOVEMBER 2017
16UPB3MC01/PB 3510 MICROBIOLOGY
Date: 04-11-2017 Dept. No. Max. 100 Marks
Time: 09:00-12:00
PART
Answer the following, each within 50 words. (10x2=20 Marks)
1. Comment on acid fast staining.
2. Define a capsule.
3. What is specialized transduction?
4. Differentiate enveloped viruses from non-enveloped viruses.
5. What is nitrification?
6. Write a note on six kingdom classification.
7. Define cryopreservation.
8. Write the growth phases of in vitro culture.
9. What are fr+ and
10. Write the importance of VAMF.
PART x 7=35 Marks)
Answer the following, each within 500 words. Draw diagrams and flowcharts wherever necessary.
11. State Koch's Postulates.

Write about the process of endospore staining.
12. Write in brief the arrangement of bacterial cells. Give one example for each group.

What are photoautotrophs? Explain with examples.
13. Name any four microbial enzymes and their applications.

Explain anaerobic fermentation.
14. Briefly explain the methods followed in virus cultivation.

Describe the morphology and structure of T4 phage.
15. Explain the methods of food preservation.

Describe the industrial processes for vinegar production.
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PART (3x15=45 Marls)
Answer any Three of the following, each within 1200 words. Draw diagrams and flowcharts wherever
necessary.
16. Elaborate on the methods of maintenance and preservation of pure cultures. Add a note on the
advantages of such methods.
17. Describe differential staining with suitable example.
18. Explain the process of bacterial photosynthesis.
19. Give a detailed account on vaccine production methods.
20. Discuss in detail sewage treatment.