Question

4. Determine if each amino acid is glucogenic, ketogenic, or both. a. phenylalanine b. leucine c. serine

Answer 1

Glucogenic amino acids are the one which produce pyruvate or intermediates in the Krebs cycle

Ex: Alanine, glycine, arginine, serine etc

Ketogenic amino acids are the one which produce ketone derivatives such as acetyl CoA or acetoacetyl CoA during the catabolism

Ex: Leucine and Lysine

Both glucogenic and ketogenic amino acids are the one which produce both pyruvate and ketone derivatives in the catabolism

Ex: phenyl alanine, tryptophan etc

phenylalanine -------Both glucogenic and ketogenic amino acid

leucine---------ketogenic aminoacid

serine--------glocogenic aminoacid