question_answer

The stage of Ornithine cycle at which arginase enzyme is used :

A) \[\text{Ornithine}\to \text{citrulline}\]

B) \[\text{arginine}\to \text{Ornithine}\]

C) \[\text{citrulline}\to \text{arginosuccinic acid}\]

D) \[\text{Ornithine}\to \text{urea}\]

Correct Answer: B

Solution :

Urea is synthesized in liver through Ornithene cycle, which was discovered by Hans Krebs and Kurt Henseliet (1932). The enzyme arginase cleaves arginine to form urea and Ornithine the urea is transported to kidneys for excretion.