The energy stored by the structure and location of matter in three-dimensional space is called potential energy. Such energy readily converts into kinetic energy to perform work. At a molecular level, chemical bonds that hold atoms together in a defined structure have potential energy. For example, plants harness solar energy in an anabolic process called photosynthesis, which converts carbon dioxide and water into glucose. Solar energy transforms into chemical energy, a form of potential energy, which is stored in the bonds of glucose. The glucose is catabolized into carbon dioxide and water. This process releases energy in the form of ATP, which is used in different cellular processes.