Madras University (UnOM) 2004 B.Sc Biochemistry bio chemistry - Question Paper

APRIL 2004 40407/SD2C
Time : 3 hours Maximum : 100 Marks


PART A – (10 X two = 20 marks)

ans ALL ques.

All ques. carry equal marks

every ans should not exceed 50 words

1. What are high energy compounds? Name a few of them.
2. Give the sequence of electron transport chain.
3. Why is RUBiscO an important protein on our planet?
4. Give the reactions for the conversion of CO2 to 3-PGA.
5. How does galatose enter glycolytic pathway?
6. Compute the energetics of aerobic glycolysis.
7. Give the irreversible reaction of TCA cycle.
8. What is the importance of Cori-cycle?
9. Give the reaction catalyzed by PD-complex.
10. How is lactose synthesized?


PART B – (5 X six = 30 marks)

ans ALL ques.

All ques. carry equal marks

every ans should not exceed 250 words

11. (a) discuss the Chemios motic hypothesis of ATP synthesis.
Or
(b) Write on Malate/glycerol phosphate shuttle.
12. (a) Write the reactions involved in Hatch-Slack cycle.
Or
(b) Write a note on Bioluminescence.
13. (a) What is gluconeogenesis? provide the reactions involved.
Or
(b) discuss the role of liver in the maintenance of blood sugar level.
14. (a) Write on the metabolism of fructose.
Or
(b) How are Glycoproteins synthesized?
15. (a) discuss the interconversion of protein and carbohydrate.
Or
(b) Write on the interconversion of protein and fatty acids.

PART C – (5 X 10 = 50 marks)

ans ALL ques.

every ans should not exceed 500 words.

16. (a) How is organization of electron transport chain established?
Or
(b) discuss the Mitochondrial transport system.
17. (a) explain the Non-cyclic photo-phosphorylation.
Or
(b) discuss the reactions and significance of photorespiration.
18. (a) How is glycogen mobilized? discuss its regulation.
Or
(b) How is glucose converted to Lactate? provide all the reactions of this pathway.
19. (a) discuss the biosynthesis of Bacterial cell wall polysaccharides.
Or
(b) provide the individual reactions of TCA cycle. How is this pathway regulated?

20. (a) discuss the role of TCA cycle in the interconversion of fuel molecules.
Or
(b) explain the metabolic profile of a few of the organs.

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Earning:   Approval pending.