Biology ยท 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

If ghee is exposed to high clarification temperature, it will lead to

  1. reduced vitamin A

  2. dark colour

  3. good keeping quality

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

Exposing ghee to high clarification temperatures causes multiple negative effects: vitamin A is heat-sensitive and degrades, the color darkens due to Maillard reactions and caramelization, and keeping quality is reduced due to formation of oxidation products. Therefore all the listed effects occur.

Multiple choice

Both vitamin K and vitamin C are involved in

  1. synthesis of clotting factors

  2. post-translation modifications

  3. antioxidant mechanisms

  4. microsomal hydroxylation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  1. Vitamin C is required for post-translation modification of procollagen polypeptide molecules in collagen synthesis.
    1. Vitamin K is required for post-translation of glutamate residues for generation of clotting factors.
    2. Synthesis of clotting factors is helped by vitamin K and not by vitamin C.
    3. Antioxidant properties are features of vitamin A, vitamin E and vitamin C, but not of vitamin K.
Multiple choice

Our body prepares ____________ in the presence of sunlight.

  1. vitamin A

  2. vitamin B

  3. vitamin C

  4. vitamin D

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

It is the correct answer. We not only get vitamin D from eggs, butter, milk, cod liver oil and fish, but our body can also prepare vitamin D in the presence of sunlight.

Multiple choice

Directions: Answer the following question by selecting the most appropriate option.

Vitamins are substances

  1. required in small quantities to prevent deficiency diseases

  2. that increase our metabolic rate leading to loss of weight

  3. required as medicines to make us healthy

  4. that build muscles to keep us strong
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Vitamins are organic compounds that the body requires in small amounts for proper functioning. They are essential nutrients that prevent deficiency diseases when present in adequate quantities, but are not medicines or weight loss solutions.