<prompt> Which of the following amino acids is purely ketogenicPhenylalanineLeucineProlineTyrosine  <response>: Glucogenic amino acids: - These can be converted into glucose. 14 amino acids are glucogenic: alanine, arginine, asparagine, aspartic acid, cysteine, glutamine, glutamic acid, glycine, histidine, methionine, proline, serine, threonine, valine.Ketogenic amino acids: - These can be converted into ketone bodies. These are leucine and lysine.Both glucogenic and ketogenic amino acids: - These can be converted into both glucose and ketone bodies. These are isoleucine, phenylalanine, tyrosine, tryptophan.Note: According to Harper 29the P-282, lysine is both ketogenic and glucogenic. But all other textbooks have mentioned it as ketogenic. 