Biochemistry Ammonia for the urea cycle is supplied by the action of the following enzymes? A Aspaate aminotransferase B Glutamate dehydrogenase C Argininosuccinate synthase D Argininosuccinate lyase 💡 Explanation Ammonia for the urea cycle is supplied by the action of the following enzymes? ✓ Correct Answer: B. Glutamate dehydrogenase