<prompt> Energy reserve of the body is:CarbohydrateTriglycerideProteinsFibres  <response>: FATS FUNCTION They are the concentrated fuel reserve of the body triglyceride Lipids are the constituents of membrane structure and regulate the membrane permeability phospholipids and cholesterol They serve as a source of fat soluble vitamins A, D, E and K. Lipids are impoant as cellular metabolic regulators steroid hormones and prostaglandins 