This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Proteins and Amino Acids, Subject name: Biochemistry
Which enzyme is not seen in urea cycle? 
Select and explain. 
A. Carbamoyl Phosphate Synthetase II, B. Carbamoyl Phosphate Synthetase I, C. Argininosuccinate Synthetase, D. Arginase
A: Carbamoyl Phosphate Synthetase II
Answer: A: Carbamoyl Phosphate Synthetase II 
Explanation: Ans. is 'a' i.e., Carbamoyl Phosphate Synthetase II* Carbamoyl Phosphate Synthetase I is an enzyme of Urea cycle* Carbamoyl Phosphate Synthetase II is an enzyme of Pyrimidine synthesis* Enzymes of Urea cycle are:# Carbamoyl Phosphate Synthetase I# Ornithine Transcarbamoylase# Argininosuccinate synthetase# Argininosuccinate Lyase# Arginase