The energy produced during respiration is used in many different ways, some examples of what it is used for are: Working your muscles. Growth and repair of cells. Building larger molecules from smaller ones i.e. proteins from amino acids. Respiration converts sugars and oxygen into carbon dioxide, water (both by-products) and importantly ATP. ATP consists of adenosine linked to 3 phophates, arranged linearly. The bonds between the terminal phosphate residues is high energy, and it is by breaking the P-P bond that energy is released. The product of this hydrolysis reaction is ADP, which can then be recycled into respiration to produce more ATP.