ADP can be used to directly power movement, while ATP cannot. ATP molecules provide less energy to the cell than ADP molecules. ATP has three phosphate groups, while ADP has two phosphate... show more ADP is only made in plants, while ATP is made in both plants and animals. ADP can be used to directly power movement, while ATP cannot. ATP molecules provide less energy to the cell than ADP molecules. ATP has three phosphate groups, while ADP has two phosphate... show more ADP is only made in plants, while ATP is made in both plants and animals. ADP can be used to directly power movement, while ATP cannot. ATP ...