Biochemistry General 30c1b982 Threonine is metabolised to: A Lysine B Arginine C Ornithine D Glycine High-Yield Explanation Threonine aldolase cleaves threonine to acetaldehyde and glycine. Oxidation of acetaldehyde to acetate is followed by formation of acetyl-CoA. Ref: Harper 28th edition, chapter 29.