<prompt> A new born child presents with breathing difficulties. On general examination, cyanotic appearance is seen. ABG analysis reveals increased pCO2. Which of the following lipids is associated with respiratory distress syndrome?PhosphatidylethanolaminePhosphatidylserineDipalmitoyl lecithinPhosphatidylinositol  <response>: Dipalmitoyl lecithin is a very effective surface-active agent and a major constituent of the surfactant preventing adherence, due to surface tension, of the inner surfaces of the lungs. Its absence from the lungs of premature infants causes respiratory distress syndrome.Reference: : HARPERS ILLUSTRATED BIOCHEMISTRY30th ed, Page No:216 