Download JNTU (NR) M.TECH 1-Semester GENERAL AND INDUSTRIAL MICROBIOLOGY March–2009 Exam Question Paper | Indian Shout

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Download JNTU (NR) M.TECH 1-Semester GENERAL AND INDUSTRIAL MICROBIOLOGY March–2009 Exam Question Paper

Code No. A0303
JAWAHARLAL NEHRU TECHNOLOGY UNIVERSITY, HYDERABAD
M.Tech. I Semester Regular Examinations, March – 2009
GENERAL AND INDUSTRIAL MICROBIOLOGY
(Bio Technology)
Time: 3 hours        Max. Marks. 60

Answer any Five questions
All questions carry equal marks


1.a)  How did Pasteur’s famous experiment defeat the theory of
spontaneous generation.
b)  What is the enrichment culture technique and why was it useful
method in microbiology

2.a)  How do chemoorganotrophs differ from chemolithotrophs from the
standpoint of energy metabolism
b)  What is meant by the term `Aseptic technique’. Describe the steps
involved in successful transferring a pure culture  from its culture
tube to a tube of sterile medium.

3.a)  Explain the difference between the growth rate constant `K’ of an
organism and its generation time ‘g’.
b)  Starting with four bacterial cells per milliliter in a rich nutrient
medium, with a 1 h lag phase and a 20 min generation time, how
many cells will there be in 1 lit of this culture after 1 hr? After 2
hr?

4.  Explain the ways of genetic transfer of host genes by viruses with a
neat sketch.

5.a)  Explain the different modes of fed batch culture used in
fermentation process.
b)  Precursor effect.

6.a)  In terms of penicillin production, what is meant by the term
semisynthetic? Biosynthetic?
b)  Discuss briefly the industrial production of riboflavin with a note
on its biosynthetic pathway.

7.  Name two organic acids that are used in the manufacture of alkyl
resins and add a note on their production process

8.a)  Explain the industrial production of Artificial sweeteners and their
applications with suitable example.
b)  Significance of scale-up.

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