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

Multiple choice

During the process of blood coagulation, vitamin K helps in

  1. the conversion of prothrombin to thrombin

  2. the conversion of fibrinogen to fibrin

  3. the formation of thromboplastin

  4. the formation of prothrombin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Vitamin K is essential for the synthesis of prothrombin (factor II) and other clotting factors in the liver. It doesn't convert prothrombin to thrombin (A - thrombin does that), convert fibrinogen to fibrin (B - thrombin does that), or form thromboplastin (C - this comes from damaged tissues/platelets).

Multiple choice

Which of the following pairs is incorrectly matched?

  1. Vitamin A --- Antixerophthalmic vitamin

  2. Vitamin C --- Healing of wound

  3. Vitamin D --- Antisterility vitamin

  4. Vitamin E --- Beauty vitamin

  5. Vitamin K --- Antihemorrhagic vitamin
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vitamin E is antisterility vitamin. Vitamin D is not anti-sterility vitamin. It is anti-rickets vitamin. 

Multiple choice

Pulses are rich in

  1. Vitamin

  2. Protein

  3. Fat

  4. None of the above

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

Pulses (dal, lentils, beans) are excellent plant-based protein sources, containing 20-25% protein by weight. They are particularly important in vegetarian diets for meeting protein requirements.

Multiple choice

Which of the following vitamin should be consumed daily?

  1. Fat soluble

  2. Water soluble

  3. Ether soluble vitamins

  4. Terpene soluble vitamins

  5. Fat and water soluble vitamins both
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

As water soluble vitamins cannot be stored in the body,  hence these are required on the daily basis.

Multiple choice

Which vitamin helps in clotting of blood?

  1. Vitamin B1

  2. Vitamin A

  3. Vitamin B12

  4. Vitamin K

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

Vitamin K is a group of structurally similar, fat soluble vitamins that the human body needs for post translational modification of certain proteins required for blood coagulation, and in metabolic pathways in bone and other tissue.

Multiple choice

_____________ is a water soluble vitamin.

  1. Vitamin D

  2. Vitamin C

  3. Vitamin A

  4. Vitamin K

  5. Vitamin E
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option. Vitamin C is the water soluble vitamin that is not stored in the body and must be replaced each day.

Multiple choice

What is Vitamin H called?

  1. Thiamine

  2. Cyanocobalamine

  3. Riboflavin

  4. Pyridoxine

  5. Biotin
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This option is correct because bioten is also called Vitamins H or coenzyme R. It is composed of ureido biotin and is necessary for cell growth and the production of fatty acid as well as the metabolism of fats and amino acid.

Multiple choice

Niacin behaves as

  1. carbohydrate

  2. protein

  3. fat

  4. vitamin

  5. Both (1) and (2)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct because niacin is called as vitamins B3 or nicotinic acid.

Multiple choice

Vitamin that is said to be essential for clotting of blood is

  1. vitamin A

  2. vitamin B

  3. vitamin K

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

Vitamin K is essential for the synthesis of clotting factors in the liver, specifically factors II (prothrombin), VII, IX, and X. Without adequate vitamin K, blood cannot clot properly, leading to excessive bleeding. Vitamins A, B, and D have important functions but are not involved in the coagulation cascade.