Composition of the cell membrane > Protein 55% Q > Phospholipids 25% lipid bila Cholesterol 13% (5nm) Other lipids 4% Carbohydrates 3% ipid molecule protein molecule11 Composition of the cell membrane ➢ Protein 55% ➢ Phospholipids 25% ➢ Cholesterol 13% ➢ Other lipids 4% ➢ Carbohydrates 3%