LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
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B.Sc. DEGREE EXAMINATION – PLANT BIOLOGY & PLANT BIO-TECH.
FIFTH SEMESTER – November 2008
PB 5400 – MICROBIAL TECHNOLOGY
Date : 12-11-08 Dept. No. Max. : 100 Marks
Time : 9:00 – 12:00
PART A (20 marks)
Answer all questions
- Choose the correct answer (5 x 1 = 5)
- Fermentors are constructed using
- a) glass b) steel c) titanium d) all the above
- Whey is used as a source for _____
- a) carbon b) nitrogen c) vitamin d) inducer
- Hepatitis B vaccine is administered to immunize against
- a) typhoid b) cholera c) jaundice d) TB
- Acetic acid is obtained from
- a) Glucanobacter b) Pseudomonas c) Aspergillus d) Alcaligenes
- The source for dextran is
- a) Pseudomonas b) Leuconostoc c) Acetobacter d) Vibrio
- State whether the following statements are true or false (5 x 1 = 5)
- Baffles increase aeration.
- Fusarium is used in the production of mycoprotein.
- Insulin is a dipeptide hormone.
- Blakeslea is used in ß-carotene production.
- Xanthan is a polysaccharide from fungi.
III. Complete the following (5 x 1 = 5 )
- Soyabean meal is used popularly as a _____ source.
- Spirulina is a _______ alga.
- Vitamin B6 is produced by the microorganism ______.
- Rennet is a _______ protease.
- Alginate is obtained from the bacterium ______.
- Answer the following each in about 50 words (5 x 1= 5)
- Define spargers.
- Mention any two lactic acid producing bacteria.
- Name two organism used in the production of vitamin A.
- Define immobilization.
- What is gasohol?
PART B
Answer any five of the following, each answer not exceeding 350 words
Draw diagrams and flowcharts wherever necessary ( 5 x 8 = 40)
- Write short notes on the characteristics of a medium.
- List out the facilities needed in a fermentation based industry.
- Write short notes on cheese production.
- Describe the process involved in cultivation of Spirulina.
- Write notes on Penicillin production.
- Explain in detail about the production of Vitamin B12.
- Discuss about the production of citric acid.
- Write notes on biopesticides.
PART C
Answer the following, each answer not exceeding 1500 words.
Draw diagrams and flowcharts wherever necessary (2 x 20 = 40)
- Describe in detail about the structure of a fermentor and explain the function of each part.
(or)
- Write detailed notes on Beer production.
- Write notes on : i. Insulin production ii. Biotransformation
(or)
- What are biofertilizers? Explain the methods used in the mass production of any two biofertilizers.
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