A: The Allied Powers, or Allies, refers to coalitions of primarily North American nations victorious over rival, central-European forces in World War I and World War II. The four nations that recurred as the main forces of the Allied Powers in both wars were France, Russia/USSR, the United Kingdom and the United States. Continue Reading
The Phospholipid Bilayer. 1  All Biological Membranes are made of the same basic structure. 2  This is composed of molecules called Phospholipids, which form a Phospholipid Bilayer. 3  Phospholipids are fats. 4  They are composed of two Fatty Acid 'tails' and a Phosphate 'head' .
Phospholipids make up the basic structure of a cell membrane. A single phospholipid molecule has two different ends: a head and a tail. The head end contains a phosphate group and is hydrophilic.This means that it likes or is attracted to water molecules.his ensures that the cells will be able to get rid of wastes and take up important nutrients and gases. The plasma membrane is a fluid mosaic. This means that it is flexible and made up of many different types of molecules. Phospholipids form the basic structure of a cell membrane, called the lipid bilayer.