An can make set free the last of its three . It pops off like the cork out of a pop-gun. As it flies off it absorbs a molecule of . This can cause in two other molecules. What is left is a phosphate and ADP.
Or the can be joined on to some other molecule, making it in turn spring loaded and ready to fire.
This firing of the end of ATP is used to power almost all of the work done by every cell on Earth!
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