During the urea cycle some ATP is converted to ADP and some ATP is converted to AMP. Given that the conversion of ATP to AMP is thought of as equivalent to the consumption of 2 ATPs, what is the total ATP consumption of the urea cycle?

Question

Quizplus · Accepted Answer

One ATP is consumed in the conversion of ornithine to citrulline, and another ATP is consumed in the conversion of argininosuccinate to fumarate and arginine. In addition, the conversion of ATP to AMP is equivalent to the consumption of an additional 2 ATPs, bringing the total consumption to 4 ATPs.

During the Urea Cycle Some ATP Is Converted to ADP