Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to CONVERT biochemical energy from nutrients into adenosine triphosphate (ATP), and then RELEASE waste PRODUCTS.[1] The reactions involved in respiration are catabolic reactions, which break large molecules into smaller ones, releasing energy in the process, as weak so-called "high-energy" bonds are replaced by stronger bonds in the products. Respiration is one of the key ways a cell releases chemical energy to FUEL cellular activity. Cellular respiration is considered an exothermic redox reaction which releases heat. The overall reaction occurs in a series of biochemical steps, most of which are redox reactions themselves. ALTHOUGH cellular respiration is technically a combustion reaction, it clearly does not resemble one when it occurs in a living cell because of the slow release of energy from the series of reactions.hope this will help youplz follow meand mark this answer ws brainlist