Human Nutrition MCQs January 8, 2026May 31, 2024 by u930973931_answers 46 min Score: 0 Attempted: 0/46 Subscribe 1. What is the recommended daily intake of fruits for a healthy diet? (A) 1 serving (B) 5 servings (C) 3 servings (D) 2 servings 2. Which vitamin is important for the absorption of calcium and phosphorus in the body? (A) Vitamin A (B) Vitamin C (C) Vitamin D (D) Vitamin K 3. What is the primary function of omega-3 fatty acids in the diet? (A) Provide energy (B) Enhance immunity (C) Build muscle mass (D) Regulate blood pressure and cholesterol 4. Which mineral is important for thyroid hormone synthesis? (A) Iron (B) Calcium (C) Iodine (D) Zinc 5. What is the primary role of water in the body? (A) Provide energy (B) Build muscle mass (C) Enhance immunity (D) Regulate body temperature 6. Which nutrient is a source of essential fatty acids that the body cannot produce on its own? (A) Fat (B) Protein (C) Carbohydrate (D) Vitamin 7. What is the recommended daily intake of vegetables for a healthy diet? (A) 1 serving (B) 3 servings (C) 2 servings (D) 5 servings 8. Which vitamin is important for the formation of blood clotting factors? (A) Vitamin A (B) Vitamin C (C) Vitamin D (D) Vitamin K 9. What is the primary function of carbohydrates in the body during exercise? (A) Enhance endurance (B) Provide energy for short bursts of activity (C) Regulate body temperature (D) Build muscle mass 10. Which mineral is important for maintaining healthy teeth and bones? (A) Iron (B) Calcium (C) Magnesium (D) Zinc 11. What is the primary role of vitamins in metabolism? (A) Provide energy (B) Build muscle mass (C) Enhance immunity (D) Regulate metabolic processes 12. Which nutrient is a precursor to neurotransmitters and plays a role in mood regulation? (A) Protein (B) Fat (C) Carbohydrate (D) Vitamin 13. What is the recommended daily intake of dairy products for a healthy diet? (A) 2 servings (B) 1 serving (C) 3 servings (D) 5 servings 14. Which vitamin is important for the maintenance of healthy skin and vision? (A) Vitamin K (B) Vitamin C (C) Vitamin D (D) Vitamin A 15. What is the primary function of minerals in the body? (A) Provide energy (B) Enhance immunity (C) Regulate body processes (D) Build muscle mass 16. Which nutrient is important for the production of hormones like insulin? (A) Protein (B) Carbohydrate (C) Fat (D) Vitamin 17. What is the recommended daily intake of whole grains for a healthy diet? (A) 5 servings (B) 2 servings (C) 3 servings (D) 1 serving 18. Which vitamin is important for the synthesis of collagen and connective tissues? (A) Vitamin C (B) Vitamin A (C) Vitamin D (D) Vitamin K 19. What is the primary role of antioxidants in the body? (A) Enhance energy production (B) Protect against oxidative stress (C) Regulate blood pressure (D) Improve bone density 20. Which nutrient is the primary source of energy for the body? (A) Protein (B) Fat (C) Carbohydrate (D) Vitamin 21. What is the recommended daily intake of water for an average adult? (A) 1 liter (B) 4 liters (C) 3 liters (D) 2 liters 22. Which vitamin is essential for the absorption of calcium in the body? (A) Vitamin D (B) Vitamin C (C) Vitamin A (D) Vitamin K 23. What is the main function of carbohydrates in the body? (A) Build and repair tissues (B) Provide energy (C) Regulate body temperature (D) Enhance immunity 24. Which mineral is important for maintaining healthy blood pressure? (A) Potassium (B) Calcium (C) Sodium (D) Iron 25. What is the primary role of proteins in the body? (A) Build and repair tissues (B) Regulate body temperature (C) Provide energy (D) Enhance vision 26. Which nutrient is crucial for the formation of red blood cells? (A) Vitamin D (B) Vitamin C (C) Calcium (D) Iron 27. What is the main function of fats in the body? (A) Provide energy (B) Enhance immunity (C) Regulate body temperature (D) Build muscle mass 28. Which vitamin is important for healthy vision? (A) Vitamin D (B) Vitamin B12 (C) Vitamin A (D) Vitamin K 29. What is the recommended daily intake of fruits and vegetables for a healthy diet? (A) 1 serving (B) 3 servings (C) 10 servings (D) 5 servings 30. Which mineral is essential for bone health and prevention of osteoporosis? (A) Iron (B) Magnesium (C) Zinc (D) Calcium 31. What is the primary function of fiber in the diet? (A) Provide energy (B) Improve digestion (C) Regulate blood sugar levels (D) Enhance immunity 32. Which nutrient is a precursor to steroid hormones like testosterone and estrogen? (A) Fat (B) Protein (C) Carbohydrate (D) Vitamin 33. What is the main role of vitamins in the body? (A) Provide energy (B) Regulate metabolic processes (C) Build muscle mass (D) Enhance bone density 34. Which nutrient is essential for the synthesis of hemoglobin? (A) Iron (B) Vitamin C (C) Calcium (D) Vitamin D 35. What is the recommended daily intake of protein for an average adult? (A) 10 grams (B) 30 grams (C) 60 grams (D) 100 grams 36. Which vitamin is crucial for collagen synthesis and wound healing? (A) Vitamin A (B) Vitamin K (C) Vitamin D (D) Vitamin C 37. What is the main function of antioxidants in the body? (A) Enhance energy production (B) Improve bone density (C) Regulate blood pressure (D) Protect against oxidative stress 38. Which mineral is important for nerve function and muscle contractions? (A) Magnesium (B) Iron (C) Calcium (D) Zinc 39. What is the primary function of carbohydrates in exercise performance? (A) Regulate body temperature (B) Enhance endurance (C) Provide energy for short bursts of activity (D) Build muscle mass 40. Which nutrient is a component of enzymes that regulate biochemical reactions in the body? (A) Fat (B) Protein (C) Carbohydrate (D) Vitamin 41. What is the recommended daily intake of sodium for a healthy diet? (A) 500 mg (B) 2000 mg (C) 1000 mg (D) 5000 mg 42. Which vitamin is important for the absorption of iron from plant-based sources? (A) Vitamin A (B) Vitamin C (C) Vitamin D (D) Vitamin K 43. What is the primary role of minerals in the body? (A) Provide energy (B) Enhance immunity (C) Build muscle mass (D) Regulate body processes 44. Which nutrient is important for brain development and function? (A) Omega-3 fatty acids (B) Fat (C) Carbohydrate (D) Protein 45. What is the recommended daily intake of fiber for a healthy diet? (A) 30 grams (B) 15 grams (C) 5 grams (D) 50 grams 46. Which vitamin is essential for the absorption of calcium and phosphorus in the body? (A) Vitamin D (B) Vitamin C (C) Vitamin A (D) Vitamin K