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' .
1 Other molecules are also found in the membrane. 2  For example, other lipids, such as cholesterol, may be present. 3  Many proteins are found in the membrane, or else are attached to lipids in the membrane. 4  The lipids, proteins, and other molecules found in biological membranes can freely move laterally (sideways). The hydrophobic ends face each other on the inside, and the hydrophilic ends are on the outsides of the membrane. 2  That way, the hydrophobic regions do not interact with water, and the hydrophilic regions do. 3  Both parts of each phospholipid molecule are happy.. 4  Other molecules are also found in the membrane.