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Describe the relationship between ATP and ADP?

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Answer:

Think of it as the “energy currency” of the cell. If a cell needs to spend energy to accomplish a task, the ATP molecule splits off one of its three phosphates, becoming ADP (Adenosine di-phosphate) + phosphate. ... When it's fully charged, it's ATP. When it's run down, it's ADP.

Step-by-step explanation:

User David Ganster
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Answer:

If a cell needs to spend energy to accomplish a task, the ATP molecule splits off one of its three phosphates, becoming ADP (Adenosine di-phosphate) + phosphate. The energy holding that phosphate molecule is now released and available to do work for the cell. ... When it's run down, it's ADP.

User Pavel Levin
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