Question
What are ketone bodies?
Acetoacetic acid, acetone and beta-hydroxybutyric acid
Nicotinic acid, folic acid and ascorbic acid
Acetone, beta-hydroxybutyryl Co-A and acetoacetic acid
Acetic acid, acetone and beta-hydroxybutyric acid
Solution
A.
Acetoacetic acid, acetone and beta-hydroxybutyric acid
The acetyl Co- A produced by mitochondrial -oxidation of fatty acids enters the Krebs cycle to produce energy, but that is not the only fate of acetyl Co- A. In liver mitochondria, some acetyl Co- A is converted to acetoacetate, - hydroxy butyrate and acetone, collective called ketone bodies, which are transported to other tissues (e.g., brain, muscle or heart) where they are converted back to acetyl Co- A to serve as an energy source.
