Introduction and Scope of Microbiology — DU B. Sc. (Hons) Microbiology Previous Year Question Papers

6. (a) What are enzymes? Name one industrially important enzyme and its producing microorganism. (b) Name the scientist who worked on development of soil microbiology. (1) (c) Write the characteristics of yeast. (2) (d) What is biogas and write its composition? Name the stages and microorganisms involved. (5) 1. (a) Define the following giving an example of microbe involved - (any four): (2.5x4=10) (iii) Nitrification (v) Microbial bioremediation (b) What do you understand by classification? (2) 2. (a) Differentiate between (any two) : (3×2=6) (i) TMV vs T4 bacteriophage (b) What do you understand by Golden age of microbiology? Discuss briefly any two discoveries from Golden age? (2+4=6) 3. (a) Who gave three domain classification? Describe it in detail. (1+4=5) (b) What are probiotics? List their health benefits. Give any two examples of probiotics. (5) (c) Give the mode of transmission for the following disease (any two) : (1x2=2) (iii) Influenza 4. Write a short note on: (4x3=12) (i) Contribution of Robert Koch (ii) Economic importance of Algae (iii) Application of microbes in agriculture 5. (a) Describe the salient features of polio virus? (5) (b) What do you understand by fermented foods? Give one example of Indian fermented food and microorganism involved. (4) (c) What is the theory of spontaneous generation? Name any two scientists who disproved the theory of spontaneous generation. (3)