Question

The presence of arginase confirms that the

• A. Urea cycle is operating
• B. Urea cycle may be operating
• C. Arginine is being converted into Ornithine
• D. Arginine is being converted into citrulline

Answer 1

Answer: (A), (C)

The correct options are
A Urea cycle is operating
C Arginine is being converted into Ornithine

Arginase is a manganese-containing enzyme. The reaction catalysed by this enzyme is : arginine + H₂O → ornithine + urea. It is the final enzyme of the urea cycle.