Biochemistry Guanido acetic acid is formed in…. from…. A Kidney; Arginine + glycine B Liver; Methionine + glycine C Liver; Cysteine + arginine D Muscle; Citrulline + aspartate 💡 Explanation Guanido acetic acid is formed in.... from.... ✓ Correct Answer: A. Kidney; Arginine + glycine