Question: what are the four stages of urea biosynthesis?
Answer: 3. Urea biosynthesis occurs in four stages: (1) Transamination (2) Oxidative deamination of glutamate (3) Ammonia transport (4) reactions of the urea cycle. Also called as Krebs-Henseleit cycle or Ornithine cycle First metabolic pathway to be elucidated(1932).