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

Which one of the following acids is present in vitamin C?

  1. Citric acid

  2. Ascorbic acid

  3. Lactic acid

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

Vitamin C is chemically known as ascorbic acid, which is its scientific name. Citric acid is found in citrus fruits but is not vitamin C. Lactic acid is produced in muscles during anaerobic respiration. Folic acid is actually Vitamin B9. The chemical structure of vitamin C is ascorbic acid.

Multiple choice

Vitamin K is required for

  1. regulation of phosphorus and calcium metabolism

  2. respiration

  3. carbohydrate metabolism

  4. synthesis of prothrombin in liver and blood clotting
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vitamin K is required for blood clotting. It is also required for the production of prothrombin (Factor II).

Multiple choice

Match the entries in Column I (coenzyme) and Column II (its dietary precursor in mammals).

 
Column I Column II
P. Coenzyme A 1. Vitamin B1
Q. Flavinadinine dinucleotide 2. Vitamin B6
R. Thiamine pyrophosphate 3. Vitamin B12
S. Pyridoxal phosphate 4. Vitamin B5

  1. P - 1; Q - 3; R - 2; S - 4

  2. P - 2; Q - 4; R - 1; S - 3

  3. P - 3; Q - 4; R - 1; S - 2

  4. P - 4; Q - 3; R - 1; S - 2

  5. P - 4; Q - 3; R - 2; S - 1
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Dietary precursor of coenzyme A is vitamin B5. Dietary precursor of flavinadinine dinucleotide is vitamin B12. Dietary precursor of thiamine pyrophosphate is vitamin B1. Dietary precursor of pyridoxal phosphate is vitamin B6.

Multiple choice

Antixerophthalmia vitamin is

  1. Vitamin D

  2. Vitamin K

  3. Vitamin E

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

Antixerophthalmia vitamin is vitamin A as it helps prevent xerophthalmia.

Multiple choice

What is chemically called ascorbic acid, is commonly known as

  1. antibiotic

  2. vitamin C

  3. vitamin B complex

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

Ascorbic acid is the chemical name for Vitamin C, an essential nutrient found in citrus fruits and vegetables. It is vital for the repair of body tissues, the immune system, and the enzymatic production of certain neurotransmitters.

Multiple choice

Vitamin 'A' is necessary in our body for:

  1. prevention of blood clotting

  2. haemoglobin synthesis

  3. proper vision

  4. improving digestion

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

Vitamin A is essential for maintaining healthy vision, especially in low light conditions, as it helps form rhodopsin in the eyes. A deficiency in Vitamin A can lead to night blindness. Other functions like blood clotting are associated with Vitamin K, and hemoglobin synthesis is linked to iron and Vitamin B12.

Multiple choice

Vitamin necessary to prevent prolonged bleeding is:

  1. Vitamin A

  2. Vitamin D

  3. Vitamin K

  4. Vitamin E
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin K is essential for the synthesis of proteins required for blood coagulation (clotting). A deficiency in Vitamin K leads to an inability of the blood to clot, resulting in prolonged bleeding from even minor wounds.

Multiple choice

Which of the following is not a fat soluble vitamin?

  1. Vitamin A

  2. Vitamin D

  3. Vitamin E

  4. Vitamin C

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vitamins are classified as either fat-soluble or water-soluble. Vitamins A, D, E, and K are fat-soluble, meaning they are stored in the body's fatty tissue. Vitamin C is water-soluble and is not stored in the body, requiring regular intake.

Multiple choice

Vitamin C is also called __________.

  1. cyanocobalamine

  2. PABA

  3. ascorbic acid

  4. thiamine

  5. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin C is chemically known as ascorbic acid. It is an essential nutrient involved in tissue repair and enzymatic production of neurotransmitters.