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Example Questions
Example Question #731 : Biochemistry
Which enzyme catalyzes the rate-limiting step of the urea cycle?
Possible Answers:
Carbamoyl phosphate dehydrogenase
Carbamoyl phosphate synthetase
Argininosuccinate lyase
Ornithine transcarbamylase
Correct answer:
Carbamoyl phosphate synthetase
Explanation:
Carbamoyl phosphate synthetase is the rate-limiting step of the urea cycle. It is the first step of the urea cycle and occurs exclusive in the mitochondria of hepatic and renal cells.
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