M.Sc., DEGREE EXAMINATION, NOVEMBER 2010
Bio-Technology
BIOCHEMISTRY
(CBCS—2008 onwards)

Part : A (10 × 2 = 20)
Answer all questions.
1. Glycerophospholipids
2. Structure of glycogen
3. Simple diffusion
4. ETC inhibitors
5. Structure of ATP
6. Redox reactions
7. HMP shunt
8. Ribozyme
9. Ammonium sulfate fractionation
10. Energetics of TCA cycle

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Part : B (5 × 5 = 25)
Answer all the questions.
11. (a) Role of buffers in biological system.
(Or)
(b) Explain the classification of amino acids.
12. (a) Explain active and passive transport with example.
(Or)
(b) Comment on oxidative phosphorylation.
13. (a) Briefly explain the Second Law of Thermodynamics.
(Or)
(b) Role of ATP synthase in mi tochondrial potential ?
14. (a) Explain purine biosynthesis pathway.
(Or)
(b) How is citric acid cycle regulated.
15. (a) Comment on the industrial applications of enzymes.
(Or)
(b) Derive a relationship between substrate concentration and initial velocity.

Part : C (3 × 10 = 30)
Answer any three questions.
16. What are co-enzymes ? Explain its significance.
17. Explain fluid mosaic model of plasma membrane ?
18. Write notes on the following :
(a) Classification of enzymes (2)
(b) First law of Thermodynamics (2)
(c) Uncouplers (2)
(d) Antimycin (2)
(e) Gibbs free energy (2)
19. Explain the steps involved in glycolysis ?
20. Explain the steps involved in the purification of enzymes.