Biochemistry Metabolism of protein and amino acid ffaa82b8 All are ketogenic & glucogenic amino acids except A Tyrosine B Isoleucine C Phenyalanine D Serine High-Yield Explanation Serine is a glucogenic amino acid.Ref: DM Vasudevan - Textbook of Biochemistry, 7th edition, page no: 245.fig 18.16.