<prompt> Ketogenic amino acids are all except-LeucineLysineTryptophanHistidine  <response>: Ans. is d i.e., Histidine o Leucine and Lysine - Pure ketogenico Tryptophan - Glycogenic and ketogenico Hitidine - Pure glucogenicGlucogenicKetogenicBoth glucogenic ketogenico Alanineo Arginineo Aspargineo Aspartic acido Cysteineo Glutamineo Glutamic acido Glycineo Histidineo Methionineo Prolineo Serineo Threonineo Valineo Leucineo Lysineo Isoleucineo Phenylalaineo Tyrosineo TryptophanNote: According to Harper 29the P-282, lysine is both ketogenic and glucogenic. But all other textbooks have mentioned it as ketogenic. 