Question

What molecule provided the backbone structure for phospholipids?
A) glycerol

B) CoA

C) glucose

D) sphingosine

Answer 1

Answer is option A

A phospholipid contains mainly glycerol,fatty acids and a nitrogenous base.They are found in the cell membranes in our body.When two fatty acid molecules are esterified to carbon atoms 1 and 2 of a glyecerol molecule and the third hydroxyl group is esterified to a phosphoric acid,a phophatidic acid is formed.Phospholipids are derived from these phosphatidic acids.Glycerol is the backbone of every phospholipids.

Sphingosine is present in sphingolipids and glucose is present in glucocerebroside(example of glycosphingolipids).Coenzyme A is not a part of phospholipids.