I believe that potential energy is important because it is stores energy that can be used at any time. Catalyst pathways are important to all living organisms, our digestive systems break down large food down into many micro vitamins. Energy is the most important concept because energy is everywhere around us, from our own bodies using energy from the food to help us move or breath to cars moving and electricity. Unlike potential energy, kinetic energy is energy in motion, for example atoms bouncing everywhere when water is in gas form, but when frozen, since they can't move, they cant create kinetic energy. Chemical energy is one of the lesser well known energies, in which two atoms join together to create energy. Free energy is the portion of a system's energy that can perform work when temperature is uniform throughout the system. Exergonic energy is when free energy is released while endergonic energy absorbs free energy. ATP is a form of energy in which for both photosynthesis and for cellular respiration to function and process. A catalyst occurs when a chemical agent changes the rate of the reactions without being consumed by the reaction. Enzymes are the catabolic protein that signals the organism's system to build proteins and reproducing DNA strands.