How many phosphates doesADP have?
If a cell needs to spend energy to accomplish a task, the ATP molecule splits off one of its three phosphates.The energy held in that molecule can now be used for work in the cell.
What is the difference between the two?The main molecule used in living things is adenosine triphosphate.The number of phosphate groups is what determines the difference between the twophosphates.The favored low energy state is ADP+Pi.
The reaction ADP+Pi+free energyATP+H2O combines the two.The exergonic reaction of ATP hydrolysis with endergonic reactions results in the release of energy that is used to perform cellular work.