<P> 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 . 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 . </P>
<P> 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 . 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 . </P>
where do the different stages of cellular respiration take place
where do the different stages of cellular respiration take place
cells
cells