Question

1. a molecule of atp has phosphate groups attached to it. when the cell needs energy, it converts atp into. when the cell is able to store energy, it converts to.

Explanation:

ATP (adenosine tri - phosphate) has three phosphate groups. When the cell needs energy, the bond between the second and third phosphate group is broken, and ATP is converted into ADP (adenosine di - phosphate). When the cell can store energy, a phosphate group is added to ADP to form ATP.

Answer:

Three; ADP; ADP; ATP