They are hydrophobic (water-fearing) in nature. Lipids are the class of organic compounds which means they are carbon containing compounds. In aqueous solution phospholipid molecules are the main component of the cell membrane in animal and plant cells and form a lipid bilayer of cell surface membranes.Phospholipids are polar molecules where they have a hydrophilic phosphate ‘head’ and a hydrophobic ‘tail’ of two fatty acids making them.A phospholipoid structure is where one fatty acid group of a triglyceride is substituted with a phosphate containing group.A fatty acid that has more than one double bond (=) is called a polyunsaturated fatty acid and if one double bond is present they are termed monounsaturated fatty acid.Hydrolysis, addition of a water molecule, of a triglyceride form fatty acids and glycerol.A condensation reaction (removal of water) between a glycerol molecule and fatty acid forms an ester bond.Triglycerides and phospholipids are two groups of lipids.One molecule of glycerol and three molecules of fatty acid come together via a condensation reaction to form a triglyceride.Lipids are associated with certain disorders such as atherosclerosis and obesity.They are the building blocks of many higher molecular weights compounds.They are the big source of energy within the body.Lipids are a heterogeneous group of compounds that are soluble in solvents like alcohol and benzene but insoluble in water.What is the importance of phospholipids?.Where does the synthesis of lipids take place?.
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