Nutrition and Food Science — DU B. Sc. (Hons) Biochemistry Previous Year Question Papers

There are 6 questions. Attempt four questions in all. State whether the following statements are True or False with reasoning: (i) Prebioties serve as food for beneficial gut bacteria. (ii) Amino acid complementation improves the overall protein quality of a diet. Botulism is caused by toxins produced by Clostridium botulinum. (io) Fad diets always provide balanced nutrition for long-term health. (0) Vitamin K deficiency leads to night blindness. (vi) Selenium functions as' antioxidant. (vii) Specific Dynamic Action (SDA) is highest for proteins compared to carbohydrates and fats. (vill) Menkes disease is caused by copper deficiency. (ix) Food preservatives are always beneficial for human health. Saturated fatty acids (SFA) are beneficial for gut health. 1.5x10=15 2. (a) Differentiate between: (i) Glycemic, Index and Glycemic Response. (i) Food allergy and Food poisoning. (iii) Deficiency diseases and Toxicity of vitamins. (b) Define the following: 3. (a) Explain the role of gut microbiome in maintaining health. What are probiotics ? Provide examples. (b) What are the factors that affect the calcium absorption in the gastrointestinal tract ? (c) Explain the basis for Recommended Dietary Allowances (RDA) for various age groups. 6,5,4 4. (a) What are anti-nutritional factors? Explain amino acid complementation and supplementation with examples. (b) Explain the role of vitamin C in human health. (c) What do you understand by essential amino acids, non-essential amino acids and conditionally essential amino acids ? 6,5,4 (ạ) What are the factors affecting Basal Metabolic Rate (BMR) ? (b) Write a note on essential fatty acids and their deficiency. Discuss the significance of omega-3/omega-6 ratio in human health. (e) What is the role of zine in the human body? 6. Write short notes on any three: 3×5=15 (a) Balanced diet (b) Medicinal role of food (c) Role of Vitamin A in visual cycle.