Select all of the following that are characteristics of ATP. Check All That Apply An immediate source of energy for cellsAn immediate source of energy for cells An enzyme used widely in all kinds of cellsAn enzyme used widely in all kinds of cells A high-energy membrane-bounded proteinA high-energy membrane-bounded protein Carries a great deal of chemical energy in a chemical bondCarries a great deal of chemical energy in a chemical bond Composed of a nitrogenous base, a sugar, and three phosphate groupsComposed of a nitrogenous base, a sugar, and three phosphate groups The bond between the sugar and nitrogenous base are what give ATP its energy