Phospholipids- are membrane lipids designed with a hydrophilic(water-loving) head and a hydrophobic(water-fearing) tail end. This is important because it allows these lipids to form important biological barriers, such as cell membranes. The cell membrane is formed via a phospholipid bilayer; meaning that there are two layers of phospholipids pointing in opposite direations. The polar heads face the inside and outside of the cell while the water-fearing tails are sandwiched in between the polar heads to be kept away from the watery environments.Therefore, Phospholipids are responsible for keeping things from entering the cell. The non-polar part of the phospholipid is its fatty acid tail.
My answer: C. The fatty acid chains
Hope this helped!
