Loyola College B.Sc. Plant Biology and Biotechnology April 2007 Microbial Technology Question Paper PDF Download

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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034

 

IB 29

B.Sc.  DEGREE EXAMINATION –PLANT BIOLOGY & PLANT BIO-TECH.

FIFTH SEMESTER – APRIL 2007

PB 5400 – MICROBIAL TECHNOLOGY

 

 

Date & Time: 03/05/2007 / 1:00 – 4:00          Dept. No.                                                     Max. : 100 Marks

 

 

PART A

 

  1. Choose the correct answer (5 x 1 = 5 )

 

 

  1. ­­Cultures can be preserved at _____ °C in cryopreservation.
  2. a) -160 b) -100 c) -196                         b) -120
  3. Saccharomyces is not used in the production of
  4. a) Wine b) Champagne c) Hep B vaccine         d) Riboflavin
  5. Which of the following is used in the production of Vitamin B2?
  6. a) Saccharomyces b) E. coli c) Propionibacterium d) Vibrio         
  7. Which of the following is used in the production of citric acid?
  8. a) Glucanobacter b) Penicillium c) Aspergillus              d) Bacillus
  9. Methanogens are is used in the production of
  10. a) biogas b) biofertilizer. c) biopesticide.                        d) biopolymer

 

 

 

  1. State whether the following are True or False (5 x 1 = 5 )

 

 

  1. Ion excghange chromatography is used for product recovery.
  2. Yoghurt is produced using
  3. Erythropoitin can be produced by recombinant DNA technology.
  4. Pectinase is used in cheese industries.
  5. Dextran is obtained from

 

 

 

III. Complete the following                                                                 (5 x 1 = 5)

 

 

  1. N-Alkanes are used as _______ source
  2. The DNA content of Spirulina is ______%
  3. Ashbya gossypii is used for the production of _______.
  4. The chemical name for Aspartame is __________________.
  5. Baculoviruses are used as ________

 

 

 

 

 

 

 

 

 

 

 

 

  1. Answer the following in about 50 words (5 x 1 = 5)

 

  1. Mention the functions of sparger and baffles.
  2. What are single cell proteins? Give examples.
  3. List any four microbes used in production of Vitamin B12.
  4. What is rennet? Mention its uses.
  5. What are exopolymers? Give examples.

 

 

PART B

 

Answer any five of the following each in about 350 words. Draw necessary diagrams.  (5 x 8 = 40)

 

 

  1. Discuss about the different nitrogen sources used in the formulation of medium.
  2. Explain the steps involved in directed mutagenesis for strain improvement.
  3. Write notes on Beer production.
  4. Give an account of humulin production.
  5. Explain in detail about the production of ß- carotene.
  6. Briefly explain about amylase production using microbes.
  7. Discuss in brief about the production of Vinegar.
  8. Write notes on biopesticides and their production. Add note on its merits.

 

PART C

 

Answer the following questions in about 1500 words. Draw necessary diagrams         (2 x 20 = 40)

 

  1. a) Explain in detail about methods used in production of recombinants for improved industrial

strains.

 

(or)

 

  1. Give a detailed account of cheese production. Add a note on the types of cheese.

 

  1. a) Explain: a) Production of Streptomycin  b) Biotransformation.

 

(or)

 

  1. i. Elaborate processes involved in the production of citric acid.
  2. Write notes on Exopolysaccarides and their applications

 

 

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