Which of the following is the main component of plasma membrane?

Proteins - 55% Cholestrol - 13% Phospholipids - 25% Carbohydrates - 3% Phospholipids are a major component of cell membranes. They form a lipid bilayer in which their hydrophillic (attracted to water) head areas spontaneously arrange to face the aqueous cytosol and the extracellular fluid, while their hydrophobic (repelled by water) tail areas face away from the cytosol and extracellular fluid. The lipid bilayer is semi-permeable.