Amount of energy released during hydrolysis of a high energy bond of ATP is

Options

A. `73 kcal mol^(-1)`
B. `0.73 kcal mol^(-1)`
C. `3.4 kcal mol^(-1)`
D. `7.3 kcal mol^(-1)`

Explanation

**Step-by-Step Solution:**

1. **Understanding ATP**: ATP stands for adenosine triphosphate, which is known as the energy currency of the cell. It consists of an adenosine molecule bonded to three phosphate groups.

2. **Hydrolysis of ATP**: When ATP undergoes hydrolysis, it reacts with water (H2O) to break one of its high-energy phosphate bonds. This process converts ATP into ADP (adenosine diphosphate) and an inorganic phosphate (Pi).

3. **Energy Release**: The hydrolysis of ATP releases energy. Specifically, when one high-energy bond is broken, approximately 7.3 kilocalories per mole of energy is released.

4. **Further Hydrolysis**: If ADP is further hydrolyzed, it can convert into AMP (adenosine monophosphate) and another inorganic phosphate, releasing a similar amount of energy (7.3 kilocalories per mole).

5. **Conclusion**: Therefore, the amount of energy released during the hydrolysis of a high-energy bond of ATP is 7.3 kilocalories per mole.

**Final Answer**: 7.3 kilocalories per mole

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