Phospholipid Bilayer Biology CK-12 Foundation

The main component of the cell membrane is a phospholipid bi-layer or sandwich The heads are polar while the tails are

A phospholipid is composed of two fatty acids, a glycerol unit, a Phospholipids form a lipid bilayer in which their hydrophillic head

phospholipid The head of each phospholipid molecule is oriented towards the exterior of the bilayer The tail of each phospholipid molecule

phospholipid bilayer Phospholipid bilayer Hydrophilic head! WATER! Hydrophobic tail! WATER! Fig 7-2 Phospholipid bilayer Membrane Structure: The Fluid Mosaic Model • Proteins