The Cleavage of Adenosine Triphosphate (ATP) to Adenosine Monophosphate (AMP)

question 1

Multiple Choice

The cleavage of adenosine triphosphate (ATP) to adenosine monophosphate (AMP) + pyrophosphate is said to supply more energy than the cleavage of ATP to ADP + phosphate.Why?

• A)ATP → ADP + phosphate cleaves a phosphoanhydride bond, and ATP → AMP + pyrophosphate cleaves a phosphodiester bond.
• B)The cleavage to AMP and pyrophosphate is followed by the degradation of AMP by adenosine deaminase.
• C)The cleavage to AMP and pyrophosphate is followed by the degradation of pyrophosphate.
• D)ATP → ADP + phosphate cleaves a phosphoanhydride bond, and ATP → AMP + pyrophosphate cleaves a phosphate ester bond.
• E)ATP → ADP + phosphate cleaves a phosphate ester bond, and ATP → AMP + pyrophosphate cleaves a phosphoanhydride bond.

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