Why do phospholipids form a double layer?

LOL, Look like someone didn't do their Biology homework... LOL. But anyway i will help you, i take these clues ryt from the book, so don't worry it will definitely ryt.


Answer: because the membrane touches the cytoplasm inside the cell and the watery fluid ouside the cell, the properties of polar heads and nonpolar tails cause the phospholipids to arrange themselves in layers, like sandwich.Why do phospholipids form a double layer?
Because of the hydrophobic effect. Entropy causes hydrophobic molecules to aggregate, and to separate themselves from water. Since phospholipids are amphiphilic, the best way for them to do this is to form micelles or bilayers. This puts the hydrophilic sides of the molecules in contact with the aqueous environment while keeping the hydrophobic portions away from water.Why do phospholipids form a double layer?
There's two portions of the phsopholipid, hydrophobic and hydrophilic. The hydrophobic (water hating) tails want to stay away from the water so they line up next to each other to minimize water contact, they can also form a bilayer to further minimize water contact by covering up the ends of the tails. The hydrophilic (water loving) head is then the only portion in contact with the water.
the hydrophobic tails on the phospholipid molecules preferentially react with one another, and are repelled by water. The polar head groups on the phospholipids are hydrophilic, though, and preferentially react with water. For these reasons, the phospholipids organize themselves in such a way as to maximize the hydrophobic and hydrophilic interactions. The form that accomplishes this the best is a bilayer.