ATP, also known as Adenosine Triphosphate, is an essential part of all organisms. ATP is able to store and transport chemical energy within cells. It does this by capturing chemical energy obtained from the breakdown of food molecules and releasing it to fuel other cellular processes.
ATP is a nucleotide that consists of ribose, three phosphate groups, adenine, and a nitrogenous base. It is soluble in water and has a high energy content due to having two phosphoanhydride bonds connecting the three phosphate groups.
Without ATP, no organisms would be able to function because this special molecule is the main source of energy for most cellular processes.
Even scientists wonder about the complex ATP molecule, and no other energy source currently exists that can accurately respond to the energy needs of the cell and carry out its crucial processes.