Botany - Respiration in Plants Question with Solution | TestHub

In electron transport chain electrons transport through a series of carriers. ${\mathrm{H}}^{+}$of ${\mathrm{NADH}}^{+}$ (received from Krebs cycle) is accepted by FAD as a result of which FAD is reduced to ${\mathrm{FADH}}^{+}$and ${\mathrm{NADH}}^{+}$is oxidised to ${\mathrm{NAD}}^{\mathrm{AD}}$. Reduced ${\mathrm{FADH}}^{+}$is oxidised by $\mathrm{CoQ}$, with the formation of ${\mathrm{CoQH}}^{+}.{\mathrm{H}}^{+}$ions then move to Cyt b, then Cyt c, Cyt a and Cyt ${\mathrm{aa}}_3$. Ultimately these ${\mathrm{H}}^{+}$are acceped by ${\mathrm{O}}_2$ and ${\mathrm{H}}_2\mathrm{O}$ is formed.