Human Nutrition MCQs

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1. What is the recommended daily intake of fruits for a healthy diet?
a) 1 serving
b) 2 servings
c) 3 servings
d) 5 servings
Answer: d

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
Answer: c

3. What is the primary function of omega-3 fatty acids in the diet?
a) Provide energy
b) Enhance immunity
c) Regulate blood pressure and cholesterol
d) Build muscle mass
Answer: c

4. Which mineral is important for thyroid hormone synthesis?
a) Iron
b) Iodine
c) Calcium
d) Zinc
Answer: b

5. What is the primary role of water in the body?
a) Provide energy
b) Regulate body temperature
c) Enhance immunity
d) Build muscle mass
Answer: b

6. Which nutrient is a source of essential fatty acids that the body cannot produce on its own?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin
Answer: b

7. What is the recommended daily intake of vegetables for a healthy diet?
a) 1 serving
b) 2 servings
c) 3 servings
d) 5 servings
Answer: c

8. Which vitamin is important for the formation of blood clotting factors?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K
Answer: d

9. What is the primary function of carbohydrates in the body during exercise?
a) Provide energy for short bursts of activity
b) Enhance endurance
c) Regulate body temperature
d) Build muscle mass
Answer: a

10. Which mineral is important for maintaining healthy teeth and bones?
a) Iron
b) Magnesium
c) Calcium
d) Zinc
Answer: c

11. What is the primary role of vitamins in metabolism?
a) Provide energy
b) Build muscle mass
c) Regulate metabolic processes
d) Enhance immunity
Answer: c

12. Which nutrient is a precursor to neurotransmitters and plays a role in mood regulation?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin
Answer: d

13. What is the recommended daily intake of dairy products for a healthy diet?
a) 1 serving
b) 2 servings
c) 3 servings
d) 5 servings
Answer: b

14. Which vitamin is important for the maintenance of healthy skin and vision?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K
Answer: 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
Answer: c

16. Which nutrient is important for the production of hormones like insulin?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin
Answer: c

17. What is the recommended daily intake of whole grains for a healthy diet?
a) 1 serving
b) 2 servings
c) 3 servings
d) 5 servings
Answer: d

18. Which vitamin is important for the synthesis of collagen and connective tissues?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K
Answer: b

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
Answer: b

20. Which nutrient is the primary source of energy for the body?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin
Answer: c

21. What is the recommended daily intake of water for an average adult?
a) 1 liter
b) 2 liters
c) 3 liters
d) 4 liters
Answer: b

22. Which vitamin is essential for the absorption of calcium in the body?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K
Answer: c

23. What is the main function of carbohydrates in the body?
a) Provide energy
b) Build and repair tissues
c) Regulate body temperature
d) Enhance immunity
Answer: a

24. Which mineral is important for maintaining healthy blood pressure?
a) Iron
b) Calcium
c) Sodium
d) Potassium
Answer: d

25. What is the primary role of proteins in the body?
a) Provide energy
b) Regulate body temperature
c) Build and repair tissues
d) Enhance vision
Answer: c

26. Which nutrient is crucial for the formation of red blood cells?
a) Iron
b) Vitamin C
c) Calcium
d) Vitamin D
Answer: a

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
Answer: a

28. Which vitamin is important for healthy vision?
a) Vitamin A
b) Vitamin B12
c) Vitamin D
d) Vitamin K
Answer: a

29. What is the recommended daily intake of fruits and vegetables for a healthy diet?
a) 1 serving
b) 3 servings
c) 5 servings
d) 10 servings
Answer: c

30. Which mineral is essential for bone health and prevention of osteoporosis?
a) Iron
b) Magnesium
c) Calcium
d) Zinc
Answer: c

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
Answer: b

32. Which nutrient is a precursor to steroid hormones like testosterone and estrogen?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin
Answer: b

33. What is the main role of vitamins in the body?
a) Provide energy
b) Build muscle mass
c) Regulate metabolic processes
d) Enhance bone density
Answer: c

34. Which nutrient is essential for the synthesis of hemoglobin?
a) Iron
b) Vitamin C
c) Calcium
d) Vitamin D
Answer: a

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
Answer: c

36. Which vitamin is crucial for collagen synthesis and wound healing?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K
Answer: b

37. What is the main function of antioxidants in the body?
a) Enhance energy production
b) Protect against oxidative stress
c) Regulate blood pressure
d) Improve bone density
Answer: b

38. Which mineral is important for nerve function and muscle contractions?
a) Iron
b) Magnesium
c) Calcium
d) Zinc
Answer: b

39. What is the primary function of carbohydrates in exercise performance?
a) Provide energy for short bursts of activity
b) Enhance endurance
c) Regulate body temperature
d) Build muscle mass
Answer: a

40. Which nutrient is a component of enzymes that regulate biochemical reactions in the body?
a) Protein
b) Fat
c) Carbohydrate
d) Vitamin
Answer: a

41. What is the recommended daily intake of sodium for a healthy diet?
a) 500 mg
b) 1000 mg
c) 2000 mg
d) 5000 mg
Answer: c

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
Answer: b

43. What is the primary role of minerals in the body?
a) Provide energy
b) Enhance immunity
c) Regulate body processes
d) Build muscle mass
Answer: c

44. Which nutrient is important for brain development and function?
a) Protein
b) Fat
c) Carbohydrate
d) Omega-3 fatty acids
Answer: d

45. What is the recommended daily intake of fiber for a healthy diet?
a) 5 grams
b) 15 grams
c) 30 grams
d) 50 grams
Answer: c

46. Which vitamin is essential for the absorption of calcium and phosphorus in the body?
a) Vitamin A
b) Vitamin C
c) Vitamin D
d) Vitamin K
Answer: c

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