Question

Which of the following is/are a phospholipid(s)?

• A. lecithin
• B. cephalin
• C. both A & B
• D. None of the above

Answer 1

The correct option is C both A & B

Lecithin and cephalin both are phospholipids. Lecithin is probably the most common phospholipid which contains the amino alcohol, choline. It is found in egg yolks, wheat germ, and soybeans. Lecithin is extracted from soybeans for use as an emulsifying agent in foods. Lecithin is an emulsifier because it has both polar and non-polar properties, which enable it to cause the mixing of other fats and oils with water components. Cephalins are phosphoglycerides that contain ehtanolamine or the amino acid serine attached to the phosphate group through phosphate ester bonds. These are found in most cell membranes, particularly in brain tissues. They also important in the blood clotting process as they are found in blood platelets.