MICROBIOLOGY Question Papers (REGULAR, 2007)

SET : 1

1. Describe the similarities between germ theory of disease and germ theory of fermentation.

2. Describe different immunological and biochemical tests used for the identification of bacteria.

3. Describe the general characters of protozoa with special references to pathogenic forms.

4. How is energy supplied to drive a concentration gradient across the membrane of the cell? (R)

5. Explain different methods of measuring of microbial growth. Write the advantages and disadvantages of each method.

6. Define water activity. Explain how water influences the growth of different microorganisms? (R)

7. Discuss about the factors that influence the effectiveness of antimicrobial chemical agents.

8. What is a standard operating procedure? Develop an SOP for an autoclaving. (R)

SET : 2

1. Justify the statement “Microorganisms are more than just agents of disease”.

2. Define a “bacterial species”. Explain the difficulties encountered in classification of bacteria. (R)

3. Describe the economic and ecological importance of gram negative aerobic rods and cocci.

4. How is energy supplied to drive a concentration gradient across the membrane of the cell.(R)

5. Classify bacteriological media based of their utility and explain about them with suitable examples.

6. Define water activity. Explain how water influences the growth of different microorganisms? (R)

7. Describe filtration as a method of sterilization and its practical application in a microbiology laboratory and in every day life.

8. Give an account of monitoring air quality. Mention methods for providing clean air rooms and chambers.

SET :3

1. Describe how the microbial world was discovered and significance of this discovery.

2. Describe five kingdom system of Whittaker’s classification of bacteria.

3. Describe asexual reproduction in fungi with suitable examples.

4. Discuss about different transport mechanisms in operation in bacteria.

5. Explain about different methods of measuring microbial growth. Write the advantages and disadvantages of each method.

6. Define water activity. Explain how water influences the growth of different microorganisms? (R)

7. Explain why a single chemical cannot be an effective disinfectant.

8. What is a standard operating procedure? Develop an SOP for autoclaving.

SET : 4

1. Why is the period 1880 – 1900 considered as the golden era of microbiology?

2. What are “signature sequences” and polymerase chain reaction? How are they useful in classification of bacteria? (R)

3. Discuss the characters of algae that are used as a basis for algal classification.

What are the attributes Euglena shares with plants and animals?

4. How is energy supplied to drive a concentration gradient across the membrane of the cell? (R)

5. Differentiate between enrichment medium and enriched medium. Write on the enrichment culturing and its importance.

6. Define water activity. Explain how water influences the growth of different microorganisms? (R)

7. Describe the phenol coefficient method used for evaluation of disinfectants of phenol type.

8. Write briefly on :

a) QC of foods

b) Sanitization