Vitamins, their Key Role, Source, & Importance in Biology
1. What is the primary function of Vitamin C?
a) Bone health
b) Blood clotting
c) Collagen synthesis
d) Vision
2. Which vitamin is essential for proper blood clotting?
a) Vitamin A
b) Vitamin K
c) Vitamin D
d) Vitamin E
3. What is the main source of Vitamin D?
a) Citrus fruits
b) Sunlight
c) Fish oil
d) Dairy products
4. Which vitamin is crucial for maintaining healthy vision?
a) Vitamin C
b) Vitamin A
c) Vitamin E
d) Vitamin K
5. Which vitamin is water-soluble and needs to be replenished regularly in the diet?
a) Vitamin A
b) Vitamin D
c) Vitamin B12
d) Vitamin K
6. What is the function of Vitamin E in the body?
a) Wound healing
b) Antioxidant protection
c) Calcium absorption
d) Red blood cell production
7. Which vitamin is crucial for the formation of red blood cells?
a) Vitamin B12
b) Vitamin C
c) Vitamin D
d) Vitamin K
8. What is the role of Vitamin K in the body?
a) Antioxidant
b) Blood clotting
c) Collagen synthesis
d) Bone health
9. Which vitamin deficiency can lead to scurvy?
a) Vitamin A
b) Vitamin C
c) Vitamin E
d) Vitamin D
10. What is the primary source of Vitamin B6?
a) Leafy greens
b) Citrus fruits
c) Meat and poultry
d) Nuts and seeds
11. What is the primary function of Vitamin A in the body?
a) Bone health
b) Vision and immune system support
c) Blood clotting
d) Muscle contraction
12. Which of the following foods is a good source of preformed Vitamin A (retinol)?
a) Oranges
b) Carrots
c) Spinach
d) Liver
13. What is the term for the condition caused by a deficiency of Vitamin A, leading to night blindness?
a) Scurvy
b) Rickets
c) Beriberi
d) Xerophthalmia
14. Which of the following statements about Vitamin A is true?
a) It is water-soluble
b) Excess intake is stored in the body
c) Found only in animal products
d) Enhances calcium absorption
15. What is the recommended daily allowance (RDA) for Vitamin A for an adult male?
a) 500 IU
b) 1000 IU
c) 2000 IU
d) 5000 IU
16. Which vitamin B is essential for the metabolism of carbohydrates, fats, and proteins?
a) Vitamin B1 (Thiamine)
b) Vitamin B2 (Riboflavin)
c) Vitamin B6 (Pyridoxine)
d) Vitamin B12 (Cobalamin)
17. Which vitamin B is crucial for maintaining healthy skin, eyes, and nerve function?
a) Vitamin B3 (Niacin)
b) Vitamin B5 (Pantothenic Acid)
c) Vitamin B7 (Biotin)
d) Vitamin B2 (Riboflavin)
18. Deficiency of which vitamin B can lead to pernicious anemia?
a) Vitamin B6 (Pyridoxine)
b) Vitamin B9 (Folate)
c) Vitamin B12 (Cobalamin)
d) Vitamin B3 (Niacin)
19. Which vitamin B is involved in the synthesis of DNA and red blood cells?
a) Vitamin B5 (Pantothenic Acid)
b) Vitamin B9 (Folate)
c) Vitamin B7 (Biotin)
d) Vitamin B6 (Pyridoxine)
20. Pellagra, a disease characterized by dermatitis, diarrhea, and dementia, is caused by a deficiency of which vitamin B?
a) Vitamin B2 (Riboflavin)
b) Vitamin B3 (Niacin)
c) Vitamin B5 (Pantothenic Acid)
d) Vitamin B6 (Pyridoxine)
21. What is the primary function of Vitamin B1 (Thiamine)?
a. Bone health
b. Vision
c. Energy metabolism
d. Blood clotting
22. Which vitamin is also known as Riboflavin?
a. B1
b. B2
c. B3
d. B6
23. Niacin is another name for which vitamin?
a. B1
b. B2
c. B3
d. B6
24. Vitamin B6 is essential for:
a. Red blood cell formation
b. Healthy skin
c. Calcium absorption
d. Protein metabolism
25. Folate is the natural form of which B-vitamin?
a. B1
b. B6
c. B9
d. B12
26. Cyanocobalamin is the synthetic form of which vitamin?
a. B1
b. B2
c. B9
d. B12
27. What is the scientific name for Vitamin C?
a) Ascorbic Acid
b) Citric Acid
c) Folic Acid
d) Riboflavin
28. Which of the following is a primary function of Vitamin C in the body?
a) Blood clotting
b) Collagen synthesis
c) Bone formation
d) Nerve transmission
29. What is the main dietary source of Vitamin C?
a) Meat
b) Citrus fruits
c) Dairy products
d) Grains
30. What condition is caused by a deficiency of Vitamin C?
a) Rickets
b) Scurvy
c) Beriberi
d) Pellagra
31. Which of the following is true about Vitamin C?
a) It is stored in large amounts in the body
b) It is water-soluble
c) It is primarily found in animal products
d) It is resistant to heat
32. Which form of Vitamin D is synthesized in the skin upon exposure to sunlight?
a) Vitamin D1
b) Vitamin D2
c) Vitamin D3
d) Vitamin D4
33. What is the main function of Vitamin D in the body?
a) Blood clotting
b) Bone health
c) Vision
d) Immune system support
34. In which food group is Vitamin D commonly found?
a) Grains
b) Fruits
c) Proteins
d) Fats
35. What is the condition caused by a deficiency of Vitamin D?
a) Rickets
b) Scurvy
c) Pellagra
d) Beriberi
36. Which of the following helps in the absorption of Vitamin D in the intestines?
a) Calcium
b) Iron
c) Magnesium
d) Phosphorus
37. What is the recommended daily intake of Vitamin D for adults?
a) 200 IU (International Units)
b) 400 IU (International Units)
c) 600 IU (International Units)
d) 800 IU (International Units)
38. Which population group is at a higher risk of Vitamin D deficiency?
a) Children
b) Adults
c) Elderly
d) Adolescents
39. What is the medical term for an excessive intake of Vitamin D?
a) Hypervitaminosis D
b) Hypovitaminosis D
c) Hypercalcemia
d) Hypocalcemia
40. Which organ converts inactive Vitamin D into its active form?
a) Liver
b) Kidneys
c) Pancreas
d) Spleen
41. What is the primary function of Vitamin E in the body?
a. Bone health
b. Vision improvement
c. Antioxidant protection
d. Blood clotting
42. Which food source is rich in Vitamin E?
a. Oranges
b. Spinach
c. Nuts and seeds
d. Red meat
43. What deficiency can result from inadequate Vitamin E intake?
a. Rickets
b. Scurvy
c. Night blindness
d. Hemolytic anemia
44. What is the recommended daily allowance (RDA) for Vitamin E in adults?
a. 50 IU (International Units)
b. 200 IU (International Units)
c. 400 IU (International Units)
d. 800 IU (International Units)
45. Which form of Vitamin E is known for its maximum biological activity?
a. Alpha-tocopherol
b. Beta-tocopherol
c. Gamma-tocopherol
d. Delta-tocopherol
46. Which of the following is a function of vitamin E in the body?
a) Blood clotting
b) Vision
c) Antioxidant protection
d) Bone development
47. What is the main role of vitamin E in the body?
a) Enhancing calcium absorption
b) Regulating blood sugar levels
c) Protecting cell membranes from oxidative damage
d) Assisting in blood clotting
48. Which food sources are rich in vitamin E?
a) Citrus fruits
b) Leafy greens
c) Nuts and seeds
d) Dairy products
49. What deficiency disease is associated with inadequate intake of vitamin E?
a) Beriberi
b) Pellagra
c) Rickets
d) Hemolytic anemia
50. Which population group might be at a higher risk of vitamin E deficiency?
a) Young adults
b) Elderly individuals
c) Athletes
d) Vegetarians
51. What is the primary function of vitamin K in the body?
a. Bone health
b. Blood clotting
c. Vision
d. Immune system support
52. Which of the following vitamins is essential for the synthesis of blood-clotting proteins?
a. Vitamin A
b. Vitamin C
c. Vitamin D
d. Vitamin K
53. In which food group is vitamin K commonly found?
a. Fruits
b. Vegetables
c. Dairy products
d. Meat and poultry
54. What is the condition caused by a deficiency of vitamin K, characterized by impaired blood clotting?
a. Scurvy
b. Rickets
c. Beriberi
d. Hemorrhage
55. Which of the following statements about vitamin K is true?
a. It is a water-soluble vitamin
b. It is stored in the body for long periods
c. It is produced in sufficient amounts by the human body
d. Newborns are often given a vitamin K shot to prevent bleeding disorders
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