2.13 ATP

the breakdown of complex molecules into smaller ones inside cells, releasing energy.

A bond that shares electrons

A bond that exchanges electrons

• A covalent bond that stores an unusually large amount of energy

• When the bond is later broken, the energy is released under controlled conditions

• In our cells, a high-energy bond usually connects a phosphate groups to an organic molecule

• Most are derived from nucleotides (the building blocks of nucleic acids)

• The most important high-energy compound

• Composed of the nucleotide adenosine monophosphate

• With additional two phosphate groups

• Requires significant amount of energy

• When the first group is added AMP turns into adenosine diphosphate