<prompt> Ketone bodies are used by all except -BrainHeart musclesSkeletal musclesHepatocytes  <response>: Ans. is d i.e., Hepatocytes o Ketone bodies are synthesized by liver and are utilized by extrahepatic tissues like heart, muscles, renal cortex and brain in starvation. o Liver cannot utilize ketone bodies because it lacks enzyme succinyl-CoA-acetoacetate CoA transferase, which is required for the activation of ketone bodies, o The first reaction in use of ketone bodies is activation of acetoacetate. o Liver lacks the enzyme CoA transferase; hence cannot utilize ketone bodies. RBCs cant use fatty acids because they dont have mitochondria 