Download PTU B.Tech 2020 March Biotechnology 3rd Sem BTBT 303 Microbiology Question Paper

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Roll No. [ ] [T T T TT] Total No. of Pages : 02

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INSTRUCTION TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

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SECTION-A

1. Describe briefly :
   1. Bacterial endospore
   2. Pili
   3. Single cell isolation
   4. Active transport vs. passive transport

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   5. Synchronous vs. asynchronous growth
   6. Transduction
   7. Continuous vs. Fed-batch fermentation
   8. Biofertilizers
   9. Solid state fermentation

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   10. Chemical sterilization

SECTION-B

2. Give a brief account of characteristics of bacteriophages.
3. Describe the factors affecting bacterial growth.

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4. Describe the methods used for the measurement of bacterial growth.
5. Describe two important feed-stocks used for industrial fermentations.
6. Describe the large scale production of microbial insecticides.

SECTION-C

6. Describe various techniques used for preservation of microbes. Also highlight merits and demerits of each technique.

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7. What is bacterial recombination? Describe briefly transformation and transduction.
8. What is strain improvement? Describe the techniques used for the improvement of industrially important microorganisms.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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