Explain how adenosine can
gain and lose a phosphate molecule.
- The ATP molecule acts as a chemical 'battery', storing energy when it is not needed, but able to release it instantly when the body requires it.
- ATP works by losing the endmost phosphate group when instructed to do so by an enzyme.
- This reaction releases a lot of energy, which can then be used to build proteins, contract muscles, etc.
- The end product is adenosine diphosphate (ADP), and a phosphate molecule.
- Additional energy can be extracted by removing a second phosphate group to produce adenosine -monophosphate (AMP).
- When the body is resting and energy is not immediately needed, the reverse reaction takes place and the phosphate group is reattached to the molecule using energy obtained from food.
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