<prompt> Tryptophan is-GlucogenicKetogenicBoth glucogenic ketogenicNone  <response>: Ans. is c i.e., Both glucogenic ketogenic GlucogenicKetogenicBoth 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. 