Biology · General Awareness
Vitamins and Nutrition
1,549 Questions
Review essential concepts of human nutrition, focusing on macro and micronutrients. The questions cover vitamin deficiencies, sources, and their physiological roles such as blood clotting and vision. This material is highly relevant for the general science section of various government exams.
Vitamin sources and functionsMacronutrients for energyBlood coagulation vitaminsDeficiency diseasesNutrient absorption mechanisms
Vitamins and Nutrition Questions
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Fish liver
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Banana
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Egg
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Lemon
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Coconut
D
Correct answer
Explanation
Coconut is a rich source of fats.
Oranges, lemons and green vegetables are a rich source of vitamin C.
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vitamins
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carbohydrates
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energy
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None of these
C
Correct answer
Explanation
Amla (Indian gooseberry, Emblica officinalis) is one of the richest natural sources of vitamin C, containing approximately 600-900 mg per 100g, far exceeding citrus fruits like oranges (about 53 mg per 100g). Mango, apple, and milk are significantly poorer sources of vitamin C.
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Biotin
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Pantothenic acid
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Folic acid
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Vitamin E
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Vitamin K
C
Correct answer
Explanation
Folic acid is a coenzyme used in the synthesis of purines and pyrimidines.
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Vitamin A
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Vitamin D
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Vitamin E
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Vitamin K
D
Correct answer
Explanation
Vitamin K is essential for blood coagulation (clotting) as it helps produce clotting factors in the liver. Without adequate Vitamin K, blood cannot clot properly, leading to excessive bleeding. Vitamin A supports vision, Vitamin D regulates calcium absorption, and Vitamin E is an antioxidant.
Match the vitamins under Group I with the coenzymes derived from them under Group II.
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| Group I |
|
|
Group II |
| P. Vitamin B1 |
1. CoA |
| Q. Vitamin B2 |
2. FAD |
| R. Vitamin B3 |
3. PLP |
| S. Vitamin B6 |
4. TPP |
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P - 1; Q - 2; R - 3; S - 4
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P - 1; Q - 3; R - 4; S - 2
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P - 3; Q - 2; R - 1; S - 4
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P - 4; Q - 2; R - 1; S - 3
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P - 4; Q - 2; R - 3; S - 1
D
Correct answer
Explanation
Thiamine pyrophosphate (TPP) is a thiamine (Vitamin B1) derivative which is produced by the enzyme thiamine pyrophosphatase.
Flavin adenine dinucleotide (FAD) is derived from riboflavin (Vitamin B2).
Coenzyme-A (CoA) is formed from adenosine triphosphate, cysteine and pantothenic acid (Vitamin B3).
Pyridoxal phosphate (PLP) is the active form of pyridoxine (Vitamin B6).
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Vitamin A
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Vitamin B
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Vitamin C
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Vitamin D
D
Correct answer
Explanation
Vitamin D has been extensively studied for its role in insulin sensitivity and glucose metabolism. Research suggests that adequate Vitamin D levels may improve pancreatic beta-cell function and reduce insulin resistance, thereby potentially lowering the risk of developing type 2 diabetes. While Vitamins A, B, and C are essential for various bodily functions, they are not specifically linked to diabetes risk reduction in the same way as Vitamin D.
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Vitamins
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Proteins
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Fats
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None
B
Correct answer
Explanation
Growing children require adequate protein intake because proteins are essential for building new tissues, muscle development, and overall growth. While vitamins, fats, and carbohydrates are all important for health, proteins are the primary building blocks needed for physical development during childhood.
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Vitamin A
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Vitamin B
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Vitamin C
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Vitamin D
D
Correct answer
Explanation
It prevents heart muscle cells to grow bigger and to become over stimulated.
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Vitamin D
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Vitamin C
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Vitamin B12
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Vitamin B6
C
Correct answer
Explanation
Vitamin B12 is the largest and most structurally complicated vitamin. It can be produced industrially only through bacterial fermentation synthesis.
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Vitamin A
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Vitamin C
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Vitamin B12
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Vitamin D
C
Correct answer
Explanation
Vitamin B12 combines with intrinsic factor and is absorbed in the ilium by active transport mechanism.
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Vitamin A
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Vitamin B5
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Vitamin C
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Vitamin D
B
Correct answer
Explanation
VitaminB5 or pantothenic acid inhibits the absorption of biotin if taken in high doses. In the same way, excess of biotin can reduce the absorption of pantothenic acid.
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Carbohydrates
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Fats
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Vitamins
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Proteins
D
Correct answer
Explanation
Proteins are called the building blocks of life. Proteins are made up of varying combinations of nitrogen-containing amino acids. There are twenty different amino acids that are important to the body. These twenty combine together in hundreds of intricate chemical patterns to create a variety of complex protein structures.
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Vitamin A
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Vitamin B
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Vitamin C
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Vitamin D
C
Correct answer
Explanation
Vitamin C keeps gums healthy.
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Vitamin A
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Vitamin B
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Vitamin C
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Vitamin D