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Which of the followig substances yeild l...

Which of the followig substances yeild less than 4 Kcal/mol when its phosphate bond is hydrolysed

A

ADP

B

ATP

C

Creatine phosphate

D

Glucose 6-phosphate.

Text Solution

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The correct Answer is:
To solve the question of which substance yields less than 4 Kcal/mol when its phosphate bond is hydrolyzed, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Question**: We need to identify which substance among the given options releases less than 4 Kcal/mol upon hydrolysis of its phosphate bond. 2. **Review the Energy Yield of Common Substances**: - **ATP (Adenosine Triphosphate)**: Hydrolysis of ATP yields approximately 7.3 Kcal/mol. - **ADP (Adenosine Diphosphate)**: Hydrolysis of ADP also yields around 7.3 Kcal/mol. - **Creatine Phosphate**: This compound is known to release energy greater than 4 Kcal/mol when hydrolyzed, as it is a high-energy phosphate compound involved in muscle contraction. 3. **Analyze Glucose 6-Phosphate**: - When glucose 6-phosphate is hydrolyzed, it releases approximately 3.3 Kcal/mol of energy. This value is less than 4 Kcal/mol. 4. **Conclusion**: Based on the analysis, glucose 6-phosphate is the only substance among the options that yields less than 4 Kcal/mol upon hydrolysis of its phosphate bond. 5. **Final Answer**: Therefore, the correct answer is **option 4: glucose 6-phosphate**.
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