Control of urea cycle involves the enzyme:: (A) Carbamoyl phosphate synthetase, (B) Ornithine transcarbamoylase, (C) Argininosuccinase, (D) Arginase
Answer is A. CPS-I reaction is the rate-limiting step in urea formation. It is irreversible and allosterically regulated.
Reference: Vasudevan 7th  ed, pg 203