Question

which yields more energy, the hydrolysis of atp to adp or the hydrolysis of adp to amp?
the hydrolysis of atp to adp
the hydrolysis of adp to amp
both reactions yield equal amount of energy.
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Explanation:

ATP (adenosine tri - phosphate) has two high - energy phosphate bonds. When ATP is hydrolyzed to ADP (adenosine di - phosphate), one high - energy phosphate bond is broken. ADP has one high - energy phosphate bond. When ADP is hydrolyzed to AMP (adenosine mono - phosphate), one high - energy phosphate bond is broken. However, the bond in ATP is "high - energy" in a more favorable sense for energy release compared to the bond in ADP. The hydrolysis of ATP to ADP releases approximately \( - 30.5\space kJ/mol\) of energy, while the hydrolysis of ADP to AMP releases approximately \( - 30.5\space kJ/mol\) as well. But in biological systems, the first hydrolysis (ATP to ADP) is more commonly associated with the major energy - providing step for most cellular processes.

Answer:

the hydrolysis of ATP to ADP