Question

The nitrogenous base present in lecithin
(a) Choline (b) Ethanolamine (c) Inositol (d) Serine.​

Answer 1

Answer:

lecithin is phosphatidyl choline. I will show you the structure.

Answer 2

Answer:

The "nitrogenous base" present in 'lecithin' is choline.

Explanation:

• Choline basically is ammonium or nitrogenous base that consists of ethanolamine with three methyl substituents attached to the amino function.
• It appears as phospholipids like phosphatidylcholine and sphingomyelin in cell membranes of plants and animals.
• Lecithin is phosphatidylcholine and contains phosphoric acid, glycerol esters, choline, and fatty acids.
• It acts as a precursor of choline and both combine to synthesis acetylcholine, the neurotransmitter.
• A "nitrogenous base" is a base containing a nitrogen atom and an organic molecule and together acts as a 'base'.