Life’s Energy Molecule ATP Life’s Energy Molecule

ATP – Energy of the Cell Chemical Energy = ATP All living organisms use the same molecule for driving metabolism Why ATP? Small Re-usable High energy bonds

ATP stands for adenosine triphosphate ATP – Energy of the Cell ATP stands for adenosine triphosphate No matter what form of energy a cell uses as its primary source, the energy is ultimately transformed and conserved as ATP. Adenine Ribose 2 Phosphate groups

ADP stands for adenosine diphosphate ATP – Energy of the Cell ADP stands for adenosine diphosphate ATP is converted into ADP by breaking the bond between the second and third phosphate groups and releasing energy for cellular processes Adenine Ribose 2 Phosphate groups

ATP – Energy of the Cell Chemical Energy = ATP When the cell has energy available, it can store this energy by adding a phosphate group to ADP, producing ATP

Chemical Energy = ATP All energy is stored in the bonds of compounds ATP – Energy of the Cell Chemical Energy = ATP All energy is stored in the bonds of compounds Breaking the bond releases the energy

Re-usable – Re-chargeable – like a battery ATP – Energy of the Cell Re-usable – Re-chargeable – like a battery Adenosine triphosphate (Fully charged battery) Adenosine monophosphate (dead battery) Adenosine diphosphate (Half-charged battery) The fewer phosphates, the less energy these molecules have because they have fewer bonds from which to release energy.