If glucose is used to provide energy for a reaction, excess energy is lost as heat.
- This means it isn't very good as energy storage as it isn't very efficient.
By storing energy in ATP, can be transferred to other molecules and can be used as chemical energy.
- The net yield (how efficient it is) from aerobic respiration is around 38 molecules of ATP per glucose molecule that enters aerobic respiration.
- However, it is not a good storage molecule as it naturally reverts back to ADP