ATP is intermediate in the hierarchy of phosphorylated compounds with high stand

Question

ATP is intermediate in the hierarchy of phosphorylated compounds with high standard free energies of hydrolysis. Why is it advantageous for cells to use ATP as their primary energy-carrying molecule? Some explanation appreciated.

A. ATP can be regenerated by coupling with a reaction that release more free energy than does ATP hydrolysis

B. ATP is thermodynamically unstable but kinetically stable.

C. Reactions that release more free energy than ATP hydrolysis do not occur in living cells.

D. The phosphoryl groups of other high-energy compounds cannot be removed.

E. The phophoryl group transfer potential of ATP is higher than that of any other phosphorylated compound.

Explanation / Answer

B-. ATP is thermodynamically unstable but kinetically stable.

E- The phophoryl group transfer potential of ATP is higher than that of any other phosphorylated compound.

A-. ATP can be regenerated by coupling with a reaction that release more free energy than does ATP hydrolysis

ATP is used as primary carancy because-

1-a thermodynamialy unfavorable reaction can be driven by favorable reaction.

2-ATP is the universal carrency of free energy in biological system

3-ATP hydrolysis drive metabolism by shifting of equlibirium of coupled reaction

4- Structure of ATP

5-Phosphoryl transfer potential of ATP is energy transfer forum of cell

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