Question

The difference between lectin and lecithin is:

• A. Lectin is a secondary metabolite while lecithin is a phospholipid.
• B. Lectin is a fat binding protein while lecithin is a phospholipid.
• C. Lectin is a phospholipid with choline while lecithin is a carbohydrate-binding protein.
• D. Lectin is a phospholipid while lecithin is a secondary metabolite.

Answer 1

Answer: (A)

The main differentiating factor between lectin and lecithin is that lectin is a secondary metabolite. Concanavalin A is a plant protein which binds with carbohydrate whereas lecithin is a fatty substance which is found in plant and animal tissues. Lectin, due to its ability to bind with carbohydrate reduces nutrient absorption. Lecithin itself is an essential fatty nutrient, a major component of phosphatidylcholine with the ability to lower the bad cholesterol in the body.