<P> The function of the electron transport chain is to produce a transmembrane proton electrochemical gradient as a result of the redox reactions . If protons flow back through the membrane , they enable mechanical work , such as rotating bacterial flagella . ATP synthase , an enzyme highly conserved among all domains of life , converts this mechanical work into chemical energy by producing ATP , which powers most cellular reactions . A small amount of ATP is available from substrate - level phosphorylation , for example , in glycolysis . In most organisms the majority of ATP is generated in electron transport chains , while only some obtain ATP by fermentation . </P>
<P> The function of the electron transport chain is to produce a transmembrane proton electrochemical gradient as a result of the redox reactions . If protons flow back through the membrane , they enable mechanical work , such as rotating bacterial flagella . ATP synthase , an enzyme highly conserved among all domains of life , converts this mechanical work into chemical energy by producing ATP , which powers most cellular reactions . A small amount of ATP is available from substrate - level phosphorylation , for example , in glycolysis . In most organisms the majority of ATP is generated in electron transport chains , while only some obtain ATP by fermentation . </P>
atp is made using the electron transport chain and the enzyme
atp is made using the electron transport chain and the enzyme
ATP synthase
ATP synthase