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Reg. No. : ................................ Name : .....................................
Third Semester B.Tech. Degree Examination, November 2009 (2008 Scheme) Branch : Biotechnology and Biochemical Engineering 08.305 : BIOCHEMISTRY (B) Time : 3 Hours
Max. Marks : 100
Instructions : 1) Answer all questions from Part A and any ‘one full’ question from Part B. 2) Each question in Part A carries 4 marks. PART – A 1. Give the structures of (a) Lactose (b) Cellobiose. 2. Write briefly on sugar derivatives. 3. What are essential fatty acids ? Give their structures. 4. Explain denaturation and renaturation of DNA ? 5. What is double reciprocal plot give its significance. 6. Give the structure of sphingomyelin. 7. Describe glyoxylate cycle. 8. Explain Malate-aspartate shuttle. 9. Briefly discuss the role of glutamine synthase and glutamate dehydrogenase reaction. 10. Explain ‘Q’ cycle.
P.T.O.
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8246 PART – B Module – I
11. a) Discuss the occurance, structure and properties of any two structural poly saccharides. b) Discuss the structure and properties of any four glycosaminoglycans. (10+10=20) 12. Discuss the different levels of structural organization of protein.
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Module – II 13. Discuss in detail the reactions of respiratory chain.
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14. Discuss the light reactions of photosynthesis.
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Module – III 15. a) Discuss the pathway for the formation of glucose from non carbohydrate sources. b) Describe the oxidation of palmitic acid to acetyl CoA. 16. Discuss the biosynthesis of lysine in bacteria.
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