I Semester M.Sc. Degree Examination, February 2013 (2011-12 Scheme) (Semester Scheme) (NS) HOME SCIENCE (Food & Nutrition) HSFN 101 : Nutritional Biochemistry Time : 3 Hours
Max. Marks : 80
Instruction : All Sections are compulsory. SECTION – A Answer any five questions. Each question carries three marks.
(5×3=15)
1. What are buffers ? Give any two examples. 2. Write the structure of Cholesterol. 3. What is central dogma in Molecular biology ? 4. Mention any three functions of Heteropolysaccharides. 5. Mention the biological importance of Copper. 6. What are exergonic and endergonic reactions ? Give an example. 7. What are lipids ? Give the classification of fatty acids. SECTION – B Answer any seven questions. Each question carries five marks.
(7×5=35)
8. Discuss the properties and functions of plasma proteins. 9. Explain pentose phosphate pathway. 10. Calculate the energy yield when one molecule of stearic acid undergo complete β -oxidation. 11. What is replication ? Explain the process of DNA replication. 12. What are enzymes ? How are they classified ? Give their characteristics. P.T.O.
PG – 510
-2-
*PG510*
13. What are the components of ETC ? Give schematic representation indicating the sites of energy conservation. 14. What are free radicals ? How are they generated by enzymatic and non-enzymatic method ? 15. What are Xenobiotics ? Explain the mechanism of their detoxification. 16. Mention the Dietary source and function of Zinc, Chromium and Magnesium. SECTION – C Answer any two questions. Each question carries fifteen marks.
(2×15=30)
17. Discuss the general reactions of Amino acid Metabolism with examples. Explain urea cycle. 18. Explain the reactions involved in citric acid cycle. What is the importance of this pathway ? 19. Explain the following : a) Transcription b) Enzyme assays c) Mechanism of oxidative phosphorylation.
β-oxidation. 11. What is replication ? Explain the process of DNA replication. 12. What are enzymes ? How are they classified ? Give their characteristics. P.T.O..
1. (a) Explain briefly the following statements : 8. Arachidonic acid is classified as an. w6 fatty acid. Receptors for Group I hormones are. located inside the cell.
18. Discuss the biological role of the following trace elements. i) Copper. ii) Chromium. iii) Manganese. 19. What is human genome project ? Discuss the concept ...
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