During the urea cycle, ATP molecules are converted into both ADP and AMP molecules in different reactions. Given that the conversion of an ATP molecule to an AMP molecule is equivalent to the consumption of two molecules of ATP, what is the total ATP consumption of the urea cycle?

Question

Quizplus · Accepted Answer

The urea cycle consumes four ATP molecules in total. Two ATP molecules are used in the conversion to AMP (equivalent to four ATPs in terms of phosphate groups), and one ATP is directly converted to ADP, totaling four ATPs in terms of energy consumption.

During the Urea Cycle, ATP Molecules Are Converted into Both