AP BIOLOGY

Detailed explanation-1: -Biological membranes consist of a continuous double layer of lipid molecules in which membrane proteins are embedded. This lipid bilayer is fluid, with individual lipid molecules able to diffuse rapidly within their own monolayer. The membrane lipid molecules are amphipathic. The most numerous are the phospholipids.

Detailed explanation-2: -What Are Cellular Membranes Made Of? With few exceptions, cellular membranes-including plasma membranes and internal membranes-are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains.

Detailed explanation-3: -A Phospholipid Bilayer The cell membrane is composed mainly of phospholipids, which consist of fatty acids and alcohol. The phospholipids in the cell membrane are arranged in two layers, called a phospholipid bilayer.

Detailed explanation-4: -Like all other cellular membranes, the plasma membrane consists of both lipids and proteins. The fundamental structure of the membrane is the phospholipid bilayer, which forms a stable barrier between two aqueous compartments.

Detailed explanation-5: -A cell membrane is a bilayer because it is made up of 2 layers of lipids. The heads of the lipids are faced towards the opposites sides (the inside and outside of a cell) while the tail (the 2 fatty acids) are inside the layer facing each other.