A phospholipid is comprised of two unsaturated fat tails and a phosphate bunch head. Unsaturated fats are long chains that are for the most part comprised of hydrogen and carbon, while phosphate bunches comprise of a phosphorus particle with four oxygen atoms appended. These two segments of the phospholipid are associated by means of a third atom, glycerol. Phospholipids can shape cell films on the grounds that the phosphate bunch head is hydrophilic (water-cherishing) while the unsaturated fat tails are hydrophobic (water-loathing). They consequently mastermind themselves in a specific example in water in view of these properties, and structure cell films. To shape films, phospholipids line up close to one another with their heads outwardly of the cell and their tails within. The second layer of phospholipids likewise shapes with heads confronting within the cell and tails confronting endlessly. Along these lines, a twofold layer is framed with phosphate bunch heads outwardly, and unsaturated fat tails within.