SDN Members don't see this ad. (About Ads) I am confused. I don't know if its from overstudying or what but here is my question. So in biology, we are taught that catabolism releases energy and drives anabolism. For example, the hydrolysis of ATP releases energy and is exothermic. Anabolism requires energy to make more complex structures. But this is where I am confused. In chem, we are taught that breaking bonds requires energy and is endothermic and making bonds releases energy and is exothermic. Am I getting something backwards here or can these concepts not be related like I am trying to do?