Saturday, October 24, 2009

biochemiostry-btechbiotechnology-jntu old question papers

Code No: R05212301 Set No. 1
II B.Tech I Semester Supplimentary Examinations, November 2008
Time: 3 hours Max Marks: 80
Answer any FIVE Questions
All Questions carry equal marks
⋆ ⋆ ⋆ ⋆ ⋆
1. In what forms carbohydrates are stored in plants and animals. Give the structural
Formulae for the constituents concerned. Write short note on it. [16]
2. How the glucose level of blood is maintained in animals? Discuss the role of Hor-
mones in sugar regulation in the animal body. [16]
3. Di erentiate between aerobic and anaerobic hydrogen transfer compare the energy-
yield of the two processes. [16]
4. Summarize the proper balance between the activities of the autotrophs and het-
erotrophs in our biosphere. [16]
5. (a) How microorganisms use ATP and a powerful reductant to convert molecular
nitrogen into ammonia?
(b) How is ammonia assimilated into amino acids? [8+8]
6. (a) Define the term lipid. How are they extracted form a natural source? What
are their general characteristic features?
(b) What are storage lipids? What is their composition? Sketch their physiological
functions. [8+8]
7. List out some of the products obtained from microbial fermentations. What is the
importance of industrial fermentations over the chemical synthesis that are carried
out in laboratories? [16]
8. What is non-cyclic photophosphorylation? When this event takes place. Illustrate
the electron flow with the help of a flow-sheet diagram. [16]

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