Final answer:
The question is about the steps and enzymes involved in the urea cycle in Biology at the High School level.
Step-by-step explanation:
The subject of this question is Biology and it is suitable for High School level students.
The question is asking about the steps and enzymes involved in the urea cycle, which is a process in the body that converts ammonia to urea for excretion.
In the urea cycle, ornithine is the precursor molecule that goes through several reactions catalyzed by enzymes to eventually produce arginine. The enzymes involved are ornithine transcarbamylase, argininosuccinate synthetase, argininosuccinase, and arginase.