Biology · General Awareness

Vitamins and Nutrition

1,711 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

Multiple choice

Match the following:

 
1.Beri beri
a.(Vitamin B12-cobalamin),
2.Pellagra
b. (B3-niacin)
3.Anemia
c. (C-ascorbic acid)
4. Scurvy
d. (Vitamin B1-thiamine)

  1. 1-(d), 2- (b), 3-(c) and 4-(a)

  2. 1-(d), 2-(b), 3-(a) and 4-(c)

  3. 1-(b), 2-(d), 3-(c) and 4-(a)

  4. 1-(a), 2-(b), 3-(d) and 4-(c)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Beriberi is caused by thiamine (B1) deficiency, pellagra by niacin (B3) deficiency, anemia by cobalamin (B12) deficiency, and scurvy by ascorbic acid (Vitamin C) deficiency. This matching tests knowledge of vitamin-deficiency disease pairs. These conditions highlight the essential roles different B vitamins and Vitamin C play in human health.

Multiple choice

Which of the following is not a function of vitamin E?

  1. It helps in the reproduction in rats.

  2. It helps in the normal muscular function.

  3. It helps in the normal use of vitamin A and carotene in the animal body.

  4. It helps in the protection against anti-infective factors.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Option (4) is the correct answer.

Multiple choice

What is the reason behind calling vitamin A as “anti-infective”?

  1. It helps to reduce the opacity of the eye lens.

  2. It helps to store vitamin B.

  3. It is universal.

  4. It has protective action on the epithelial tissue of the body.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vitamin A is known as “anti-infective” because it has protective action on the epithelial tissue of the body.

Multiple choice

What is the chemical name of vitamin B1?

  1. Riboflavin

  2. Thiamine

  3. Cyanocobalamin

  4. Pyridoxine
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Vitamin B1 is thiamine, essential for carbohydrate metabolism and nerve function. Riboflavin is B2, cyanocobalamin is B12, and pyridoxine is B6. Thiamine deficiency causes beriberi, and the vitamin is found in whole grains, legumes, and pork.

Multiple choice

Blood clotting cannot take place in the absence of

  1. vitamin A

  2. vitamin K

  3. calcium ions

  4. vitamin B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Vitamin K is essential for the synthesis of clotting factors II, VII, IX, and X in the liver. Without vitamin K, these factors cannot be properly carboxylated and become functionally inactive, leading to impaired blood clotting. This is why vitamin K deficiency causes bleeding disorders.

Multiple choice

Orange peel is not a good source of

  1. vitamin C

  2. iron

  3. dietary fibre

  4. calcium
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Yes, this is the correct answer. Orange peel is not a source of iron. It is a good source of calcium, dietary fibre and vitamin C.

Multiple choice

Compounds, which are important in the functioning of enzymes, are

  1. vitamins

  2. salts

  3. carbohydrates

  4. alkaloids
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vitamins (especially B vitamins) act as coenzymes or cofactors that are essential for proper enzyme function. Many enzymes require vitamin-derived cofactors to catalyze biochemical reactions. Salts, carbohydrates, and alkaloids do not typically function as enzyme cofactors in the same way.

Multiple choice

Vitamin B12 is helpful

  1. in the absorption of fats

  2. to stimulate the liver

  3. to stimulate the bone marrow

  4. to increase life span of RBC

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin B12 (cobalamin) is essential for DNA synthesis and red blood cell formation in bone marrow. Deficiency causes megaloblastic anemia due to impaired erythropoiesis, not effects on fat absorption, liver stimulation, or RBC lifespan.