PART-(A)
1. Explain the contribution of following scientists in the field of microbiology:
(a) Louis Pasteur
(b) Francesco Redi
(c) Antonie van Leeuwenhoek
(d) Robert Koch
(e) Joseph Lister
2. (a) Compare bacteria, archea and eucarya in terms of their cell wall, membrane lipids, gas vesicles, mRNA introns and size of ribosomes.
(b) Explain the basis of phenetic and genotypic system of classification.
3. (a) Explain the lytic and lysogenic modes of replication of bacteriophages with a suitable diagram.
(b) How is nucleic acid composition used for taxonomic determination?
4. (a) Which three modes of reproduction are present in algae?
(b) Write any five characteristic of a typical eubacteria.
5. (a) Write a brief note on purple sulfur bacteria and give two examples.
(b) What are Rickettsiae? Write their characteristics.
PART- (B)
6. (a) Explain the replication cycle of polio virus with suitable diagram.
(b) Write characteristics of Euglenophyta?
7. (a) Illustrate economic importance of algae in food industry using any five examples.
(b) What are rhizomorphs and sclerotia? Explain their role in fungi.
8. (a) Give a brief account of mycoses?
(b) How do protozoa obtain their nutrition?
9. (a) Differentiate between the following terms:
(i) Passive and facilitated diffusion.
(ii) Nutrient medium and selective medium
10. (a) What is biofilm? How is it important?
(b) Write the industrial process of yogurt production.
PART-(A)
1. Explain the following terms in 2-4 lines:
(a) Spontaneous generation theory
(b) Germ theory of diseases
(c) Fermentation
(d) Bacteriophages
(e) Phenetic taxonomy
2. (a) Explain the contribution of Antonie von Leeuwenhoek and Joseph Lister in the field of microbiology.
(b) Explain different organs of locomotion in algae.
3. (a) Define taxonomy and explain its different hierarchical levels.
(b) What is FAME profiling and its role in microbial characterization?
4. (a) Write in short about prions and coenocytic fungal hyphae.
(b) Explain different methods of horizontal gene transfer in bacteria.
5. (a) What are the differences between Gram positive and Gram negative bacteria. Give one example of each.
(b) Explain the general process of replication in viruses.
PART- (B)
6. (a) Write a brief note on commercial importance of algae.
(b) What different types of food reserves are present in algae?
7. (a) Write a brief note on mycotoxins.
(b) Write three characteristics each of microsporidia and basidiomycota.
8. (a) How do pathogenic protozoa get their nutrition?
(b) What are giardiasis and aspergillosis?
9. Write a short note on the following:
(i) Symbiosis
(ii) Differential culture medium
10. (a) What are antiseptics and disinfectants? Write three traits of a good antiseptic/disinfectant
(b) Write the industrial process of wine production.
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