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Question

Lecithin, a small molecular weight organic compound found in living tissues, is an example of:

Options

A.Glycerides
B.Carbohydrates
C.Amino acids
D.Phospholipids

Solution

Sol. [Key Concept: Lecithin as a phospholipid]

Lecithin, commonly referring to phosphatidylcholine, is a phospholipid found in biological membranes. It contains a glycerol backbone, fatty acid chains and a phosphate containing head group. It is neither a carbohydrate nor an amino acid. Hence, option (4).

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