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 general knowledge science & technology

Which one of these vitamins is involved in controlling cell differentiation and proliferation?

  1. Vitamin B12

  2. Vitamin B6

  3. Vitamin D

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

Vitamin D plays a crucial role in controlling cell differentiation and proliferation through its nuclear receptor (VDR), which regulates gene expression. It helps maintain proper cell growth and prevents abnormal proliferation. Vitamin D deficiency has been linked to various cancers and autoimmune disorders.

Multiple choice general knowledge

Spinach leaves are rich source of

  1. Iron

  2. Vitamin A

  3. Carotene

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

Spinach is indeed a good source of iron, containing approximately 2.7 mg of iron per 100g raw spinach. However, the popular belief that spinach is exceptionally high in iron originated from a decimal point error in early research. While it does contain iron, the amount is moderate, not extraordinary.

Multiple choice general knowledge science & technology

Which of the following vitamins promote healthy functioning of eyes in human beings?

  1. Vitamin B

  2. Vitamin C

  3. Vitamin A

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

Vitamin A (retinol) is essential for healthy vision, particularly night vision, and maintaining the cornea. Deficiency causes night blindness and eventually total blindness. Vitamin B aids metabolism, Vitamin C supports immunity, and Vitamin D regulates calcium absorption - none primarily support vision.

Multiple choice softskills communication

Oranges ______ Vitamins.

  1. contains

  2. contain

  3. are containing

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Contain is correct because Oranges is a plural subject, requiring a plural verb. Contains is singular. Are containing is present continuous, which doesn't fit this general fact statement about oranges containing vitamins.

Multiple choice

Which of the following sterols is a precursor to vitamin D2?

  1. Stigmasterol

  2. Ergosterol

  3. Campesterol

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

Ergosterol is a biological precursor (a provitamin) to vitamin D2. It is turned into viosterol by ultraviolet light and is then converted into ergocalciferol which is a form of vitamin D. It does not occur in plants or animal cells, but it is a component of yeast and fungal cell membranes serving the same function that cholesterol serves in animal cells.

Multiple choice

How do proteins help us?

Directions: Read the passage given carefully and answer the question that follows.

The diet which contains adequate amount of all the important nutrients like carbohydrates, fats, proteins, minerals and vitamins, sufficient for the normal growth and development of the body is called a balanced diet. The constituents of balanced diet are - Carbohydrates, Fats, Proteins, Minerals (Salts), Vitamins, Water and Roughage, Carbohydrates are the compounds of carbon, hydrogen and oxygen. They are the main source of energy. The fats are the compounds of carbon, hydrogen and oxygen. The main function of fats in the body is to provide a steady source of energy. The proteins are highly complex organic compounds of carbon, hydrogen, oxygen and nitrogen. Proteins are very important for the growth and repair of the body. Kwashiorkor is a disease which occurs due to the deficiency of proteins in the diet of children whereas Marasmus occurs in the infants (small children) due to the deficiency of proteins. The metals, non-metals and their salts are called minerals. Our body needs minerals for its proper functioning.

  1. They help purify the blood.

  2. They help us grow and repair.

  3. They help us grow hair.

  4. They help us fight with diseases.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

 "Proteins are very important for the growth and repair of the body" gives us the answer. So, option 2 is the correct answer.