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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034 B.Sc.DEGREE EXAMINATION PLANT BIOLOGY AND PLANT BIOTECHNOLOGY THIRDSEMESTER APRIL 2017
PB 3510- MICROBIOLOGY
Date: 02-05-2017 Dept. No. Max. 100 Marks
09:00-12:00 Part A Answer the following, each within 50 words. (10x2=20 marks)
1. Who is the father of microbiology? Mention his contributions.
2. What is Bergey's Manual used for?
3. Differentiate an autotroph from a heterotroph.
4. What is Generation time?
5. Mention any two microbial enzymes and their applications.
6. What do and cells refer to?
7. Define the term Bacteriophage. Give an example.
8. What are enveloped viruses?
9. What is activated slugde process?
10. Define the term 'Rhizosphere'.
Part B Answer the following, each within 500 words. Draw diagrams and flow charts wherever necessary (5x7=35marks)
11. Write a short note on Spontaneous Generation of Organisms.
List the major characteristics of microorganisms.
12. With reference to types of media for cultivation of bacteria answer the following:-
Selective media ii) Differential media
Classify bacteria based on their mode of nutrition.
13. Explain Embden-Meyerhof (glycolytic) pathway of glucose catabolism.
Describe the process of generalized transduction.
14. Describe the structure of T4 bacteriophage.
Write a short note on types of vaccines and its production. 15. What is VAM? How is it beneficial to plants? Explain carbon cycle.
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PART C Answer any three of the following, each within 1200 words. Draw diagrams and flow charts wherever necessary: (3x15=45 marks)
16. Explain the working principle and applications of TEM.
17. Elaborate on the modes of cell division in bacteria.
18. Describe the events that take place during conjugation in E.coli.
19. Give a detailed account on viral replication.
20. Explain in detail the structure and production of Penicillin.