Advanced Nutrition — DU B.Sc. (Hons.) Home Science Previous Year Question Papers

Attempt five questions in all. 1. Explain briefly any six of the following: (a) Measuring ideal digestibility is better than fecal digestibility of amino acids. (6) Eating more than 60 g of fiber per day can be harmful. (c) Non-glyceride components of fat provide health benefits.' (d) Direct calorimetry is a cumbersome method of measuring energy expenditüre. (e) People travelling to high altitudes lose their appetite. = (A Drinking tea or coffee with meals can decrease iron absorption. (g) Even at high calcium intakes, the Western population suffers from a high fracture rate. 2. (a) What are the physiological changes that take place in astronauts ? How does it affect their nutrient requirements? Explain how are the heart rate monitoring technique and the doubly labelled water technique used to estimate energy expenditure? What are the factors affecting the absorption ofirón? Explain the role of Vitamin C in improving iron absorption. (b) . Taking any example of a vitamin, explain how enzyme studies are used to assess its requirements. 4. What are the sensitive methods of assessment of the requirements of any two of the following nutrients ? 5. Describe the biological role of any three of the following nutrients: 3×6=18 (d) Folic. acid. 6. Write short notes on any three of the following : (a) Physiological changes that take place in an extremely hot environment (6) Factors affecting energy requirements (c) Water compartments in the body • (d) Antioxidant vitamins • (e) Biological methods of protein quality assessment.