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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
B.Sc. DEGREE EXAMINATION ADVANCED ZOOLOGY AND CHEMISTRY
THIRD SEMESTER NOVEMBER 2017
PB 3206/ PB 3200 GENERAL MICROBIOLOGY
Date: 15-11-2017 Dept. No. Max. 100 Marks
Time: 01:00-04:00
PART A
Answer the following, each within 50 words. (10 x 2 20 Marks)
1. What are bacteriophages?
2. Comment on Whittakar's Five kingdom concept.
3. What is a pure culture?
4. List the components of bacterial cell wall.
5. What are plasmids?
6. Define generalized transduction.
7. What do you mean heteroecious fungi?
8. Give the features of TMV.
9. Mention the uses of penicillin.
10. Enumerate the microbes involved in nitrogen cycle.
PART B
Answer the following, each within 500 words. Draw diagrams and flowcharts wherever necessary.
X 7 35 Marks)
11. Outline the classification of fungi.
OR
Bring out the general characters of algae.
12. Explain the methods to determine microbial growth.
OR
Write notes on the types of medium and their significances.
13. Briefly explain about gene regulation by operon model.
OR
Give an account on the mechanism of bacterial transformation.
14.a) Mention the pathogen, symptoms and control measures of citrus canker.
OR
Write short notes on little leaf of brinjal.
15.a) Briefly explain about microbial enzymes and their applications.
OR
Explain the types of vaccines and its uses.
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PART C
Answer any three of the following, each within 1200 words. Draw diagrams and flowcharts wherever
necessary. X 15 45 Marks)
16. Describe the classification of bacteria based on shape, cell arrangement and flagellation.
17. Elaborate on the ultrastructure of a bacterial cell.
18. Illustrate and explain the mechanism of bacterial conjugation.
19. Explain the life cycle of Puccinia. Add notes on symptoms and control measures.
20. Highlight the different stages of waste water treatment.