define a lipid and identify its function in the diet and body.
Functions of Lipids. A lipid is a non-soluble molecular organic compound comprised of hydrogen and carbon. As far as their purpose in the human body goes, lipids are of crucial importance for both energy storage and cell membrane development. Plants and animals alike contain lipids which they depend on for energy.
Lipids are important constituent of of the diet because they are a source of high energy value. Lipids are also important because of the fat-soluble vitamins, and essential fatty acids found in the fat of the natural food stuffs. Body fat serves as a very good source of energy, it is stored in adipose tissues. They also act as insulating material in the subcutaneous tissues and are also seen around certain organs.