Question

one reason that atp is a source of energy is that the products of atp hydrolysis have less free energy than the reactants. why?

Answer 1

ATP is a source of energy is that the products of hydrolysis of ATP have less free energy than the reactants because :

1. Hydrogen bonding between free phosphate and water,
2. Resonance stabilization of free phosphate,
3. Electrostatic repulsion in ATP

Due to the high-energy phosphate bonds in ATP molecules, a significant amount of free energy is released during hydrolysis. The initial hydrolysis of ATP takes place at the gamma phosphate and results in the production of adenosine diphosphate (ADP) and a free phosphate group.

7.3 kcal/mol of energy is released during the hydrolysis of one ATP molecule (G = 7.3 kcal/mol of energy).

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