Ketone bodies are produced during the metabolism of fats and include which of the following?

• A. Ketone Bodies
• B. Glucose
• C. Amino Acids
• D. Hormones

Answer: (A)

Ketone bodies are produced in the liver from fatty acids to supply energy when glucose is limited. The actual ketone bodies formed are acetoacetate, beta-hydroxybutyrate, and acetone, which can be used by the brain and other tissues when carbohydrate availability is low. The option that names ketone bodies reflects the class being asked about, making it the correct choice. Glucose is a carbohydrate, not a ketone body. Amino acids are protein-building blocks that can feed into various pathways, but they are not ketone bodies themselves. Hormones are signaling molecules, not ketone bodies.