This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
ATP stands for Adenosine Tri Phosphate. It contains three phosphate groups.
But when a phosphate group is removed from ATP, the number of phosphate groups remaining is only two.
So, the remaining molecule is called ADP, which means Adenosine Di Phosphate.

1 5 1
Atp ,means adenosine tri phosphate if one is removed it becomes adenosine di phosphate