<prompt> Which of the following is not a ketone body -PGI 84AcetoneAcetic acidAcetoacetateBeta-hydroxybutyric acid  <response>: Ketone bodies are three water - soluble molecules acetoacetate, beta-hydroxybutyrate, and their spontaneous breakdown product, acetone that are produced by the liver from fatty acids. Acetoacetic acid is a ketone body, but acetic acid is not. Note that acetic acid is hydrophobic while acetoacetate is water-soluble. 