Question

Which of the following options is a nitrogenous base present in lecithin?
A. Choline
B. Ethanolamine
C. Inositol
D. Serine

Answer 1

Hint: The word lecithin is derived from the greek word, “Lecithos” which means, Egg yolk. Phosphatidylcholine is commonly named as lecithin. Lecithin is the most common and abundant Glycerophospholipid in the body.

Complete step by step answer:
Lecithin acts as a precursor of choline and both together combine in the process of synthesis of acetylcholine. This acetylcholine as we know is the neurotransmitter present in the nerve endings in our body.
Choline is a nitrogenous base that is made up of ethanolamine. Three methyl substituents with ethanolamine are attached to the amino function.
It is found as phospholipids like phosphatidylcholine in cell membranes of plants and animals.
Lecithin is phosphatidylcholine and it is composed of phosphoric acid, glycerol esters, fatty acids and choline.
From the above analysis, it is clear that choline is the nitrogenous base found in lecithin

Hence, the correct answer is option (A).

Additional Information : Lecithin supplements are found in the market as a product of personal health and wellness. Lecithin supplements are usually produced from eggs,sunflower seeds or soybeans. Soy is the most commonly used ingredient in the creation of lecithin supplements.
Benefits of Lecithin supplements:-
A. Improves digestion
B. Lowers cholesterol levels
C. Improves the overall health of heart
D. Aids breastfeeding mothers
E. Smoothens and moisturises the skin.
In Spite of all those benefits, people must look out for the ingredients as a lot of people suffer from soy and egg allergies.

Note: A nitrogenous base is a base compound containing a nitrogen atom and an organic molecule. Together, the whole molecule acts as a 'base'.