The Production of Which Waste Product Requires the Greatest Amount

Question

The production of which waste product requires the greatest amount of energy?
A)Uric acid
B)Urea
C)Ammonia
D)Urea and ammonia are equal
E)Urea,ammonia,and uric acid all require the same amount of energy.

Accepted Answer

Synthesis of uric acid requires a long,complex series of enzymatic reactions that use even more ATP than does urea synthesis.Little or no energy is required to convert an amino group to ammonia by adding a hydrogen ion.