Nutritional Biochemistry — DU B.Sc. (Prog.) Home Science Previous Year Question Papers

Name of thie Paper : Nutritional Biochemistry (DSE) Instruction for Candidates 2. Attempt four questions in all. Q1. (a) Define the following with suitable examples (Any 5): Non-reducing sugar Iodine Value (b) Draw the structures of following (Any 5): Oleic acid Q2. (a) Give biochemical role of zinc and iodine minerals in the human body. (b) Explain important features of different types of secondary structures of protein along with diagrams. Q3. Differentiate the following (any three): (a) Essential and non-essential amino acid (b) Storage lipids and membrane lipids (c) Starch and glycogen (d) Water soluble and fat soluble vitamins (5 x 3) Q4. (a) Discuss the role of vitamin D in regulating calcium metabolism. (b) Describe the effect of temperature and substrate concentration on enzyme activity. (c) How are essential and non-essential fatty acids different from each other? Discuss with examples. Q5. (a) Discuss the role of vitamin A in the visual cycle. (b) Write a short note on stereoisomerism in carbohydrates. (7,8) Q6. (a) Give the chemical equation for the formation of osazones of glucose. (b) Why is sucrose called an invert sugar and non-reducing in nature? (c) Discuss the various biochemical functions of ascorbic acid. (5, 5,5)