The other electron follows this pathway. So we have one electron being transferred onto the two Fe to sulfur group found on the risky center. And then that same electron moves onto the Heme group of Cytochrome C one. Now, by the way, inside the Heme group. So in the oxidized version of Cytochrome C one, that Fe atom basically exists in this form. But when it gains a single electron, so we have an electron coming in.