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

Which vitamin is destroyed on heating?

  1. C

  2. A

  3. D

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

Vitamin C (ascorbic acid) is highly heat-sensitive and is easily oxidized or destroyed when food is cooked or heated for prolonged periods.

Multiple choice

The chemical name of vitamin B is

  1. nicotinamide

  2. ascorbic acid

  3. riboflavin

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

Thiamine (vitamin B1) was the first B vitamin discovered and is often referred to simply as vitamin B in older contexts. Other options: riboflavin is B2, nicotinamide is a form of B3, and ascorbic acid is vitamin C.

Multiple choice

Egg is a good source of

  1. vitamins

  2. minerals

  3. proteins

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Eggs are considered a complete food source, containing high-quality proteins, various vitamins (like B12), and minerals (like selenium).

Multiple choice

Which of the following are water soluble vitamins?

  1. Vitamins A, D, E and K

  2. Vitamins C and D

  3. Vitamins A, C, D and E

  4. Vitamin C and B group vitamins
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vitamins A, D, E and K are fat soluble whereas B group vitamins and vitamin C are water soluble.

Multiple choice

The nutrient which is not stored in the human body is

  1. protein

  2. fat

  3. carbohydrate

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

Unlike fats (stored in adipose tissue) or carbohydrates (stored as glycogen), proteins are not stored in the body in a specific reservoir. Excess protein is broken down and the nitrogen is excreted.

Multiple choice

Vitamin required for blood coagulation is

  1. Vitamin A

  2. Vitamin D

  3. Vitamin E

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

Vitamin K is a group of structurally similar, fat soluble vitamins that are needed for the posttranslational modification of certain proteins, mostly required for blood coagulation but also involved in metabolic pathways in bone and other tissues.

Multiple choice

-------------------- is a water soluble vitamin.

  1. Colchicine

  2. Cobalamin

  3. Cobaltocene

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

Cobalamin, is a water soluble vitamin with a key role in the normal functioning of  brain and nervous system, and for the formation of blood. It is normally involved in the metabolism of every cell of the human body, especially affecting DNA synthesis and regulation, but also fatty acid synthesis and energy production.

Multiple choice

Which of the following vitamins are synthesized by our body?

  1. Vitamins C and D

  2. Vitamins A and K

  3. Vitamins D and K

  4. Vitamins B and K
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is correct. Our body can synthesize both vitamins D and K. Vitamin D is produced when the skin is exposed to sunlight. Vitamin K is synthesized by the bacteria present in the intestine.

Multiple choice

Why vitamin B is known as complex?

  1. It is present in various vegetables and fruits.

  2. Its structure is very complex.

  3. It helps to cure many diseases.

  4. It is sub divided into number of groups.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Yes, it is correct. The word 'complex' is used with vitamin B because vitamin B is subdivided into number of groups from Vit. B1 to B12 and all the vitamins are essential for the body.

Multiple choice

What is the connection between ultraviolet radiation and the vitamin D in human beings?

  1. UV rays stimulate the synthesis of vitamin D in humans.

  2. UV rays synthesise vitamin D in our bodies.

  3. There is an inverse connection between ultraviolet radiation and the production of vitamin D in our bodies.

  4. UV rays stop human bodies from synthesing vitamin D.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ultraviolet radiation must penetrate the outer skin layer in order to produce the vitamin D. This is important because vitamin D is vital for the intestine to absorb calcium and phosphorus from food for bone growth and repair.