Transfer of the carbamoyl moiety of carbamoyl phosphate to ornithine is catalysed by a liver mitochondrial enzyme:: (A) Carbamoyl phosphate synthetase, (B) Ornithine transcarbamoylase, (C) N-acetyl glutamate synthetase, (D) N-acetyl glutamate hydrolase
Answer is B. The carbamoyl group is transferred to the NH2 group of ornithine by ornithine transcarbamoylase (OTC).
Reference: Vasudevan 7th  ed, pg 204