M.Sc-M.Sc BioTechnology 2nd Sem BT - 23a : Microbiology(University of Pune, Pune-2013)

BIOTECHNOLOGY

BT - 23a : Microbiology

(2005 Pattern)

Time : 1½ Hours]                                                                                         [Max. Marks :40

Instructions to the candidates :

1) Question No. 1 is compulsory. Out of the remaining attempt 2 questions.

2) Neat diagrams must be drawn wherever necessary.

3) Figures to the right indicate full marks.

Q1) Explain the growth kinetics involved in the phases of bacterial growth curve.[10]

Q2) a)      Describe the crown gall formation mechanism in Agrobacterium. Add a

note on nitrogen fixation.                                                                            [8]

b)       Discuss the Pathogenicity of Mycobacterium tuberculosis. What

precautions should be taken while handling Pathogens.                  [7]

Q3) Write short notes on.                                                                                            [15]

a)       Multiple drug resistance

b)       Preservation of bacteria

c)       Anaerobes

Q4) a)      Explain the physical & chemical methods of sterilization.              [5]

b)       Describe the method of ethanol production using micro organisms. [5]

c)       Comment on the classification and life cycle of cyanobacteria.     [5]

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Earning:   Approval pending.