The molecule I chose was ATP - in short for Adenosine triphosphate -. ATP is the main molecule that carries energy in cells. It is created as a result of cellular respiration and is a very significant molecule that everyone needs in order to live. ATP is made of adenine, ribose and groups of phosphate. It will be later used by your body to preform certain actions. Overall, the reason I chose ATP because it is very important and common in your body.