Question

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

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

Answer 1

The Correct Option is B

Lecithin is a phospholipid, a key constituent of cell membranes crucial for cellular operations. Its structure comprises a glycerol backbone, two hydrophobic fatty acid tails, and a hydrophilic phosphate group head, enabling bilayer formation essential for cell membranes.

Other biological molecules differ:

• Amino acids: Protein building blocks, each with an amino group, carboxyl group, and a unique side chain.
• Glycerides: Glycerol esterified with fatty acids, mainly functioning as stored fat.
• Carbohydrates: Organic compounds of carbon, hydrogen, and oxygen, providing energy and structural support.

Consequently, lecithin's correct classification is Phospholipids.