Download PTU B.Sc-BT 2020 March 2nd Sem 47032 General Microbiology Question Paper

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Roll No. [ ] [T TTTTT] 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) Answer briefly :

1. What is contribution of Robert Koch to microbiology?
2. Explain in brief the term “asynchronous growth”.
3. Write the products obtained by anaerobic fermentation of glucose.

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4. What is the importance of nitrogen fixing microbes?
5. Define the term “chemostat”.
6. Write the distinguishing characteristic of gram +ve and Gram —ve bacteria.
7. Differentiate between yeast and fungi?
8. Name the organism causing Lock jaw disease.

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9. What do you understand by the term heterotrophs.
10. Explain the word “diauxic growth” in microbes.

SECTION-B

2. Explain the different types of sterilization agents used.
3. Write the method used to determine the different phases growth in an organism.

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4. Differentiate between the bright field and dark field microscopy.
5. Discuss the various chemical agents used as antimicrobials and sterilizing agents.
6. Discuss growth curve. Write the equation to determine the growth rate of an organism.

SECTION-C

6. Discuss in detail the molecular methods used for production of a heterologous protein in a bacteria.

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7. a) Describe the Nitrogen fixing microbes and their role in agriculture
   b) Explain the principle and working of electron microscope.
8. Elaborate on the cell wall structure of Gram +ve and Gram —ve bacteria with diagrams.

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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