And then those electrons basically travel via a series of groups, our iron sulfur groups, and eventually end up on a molecule known as Ubiquinon, shown by this Q circular symbol. So this is Ubiquinon, and Ubiquinon is basically an important electron carrier. So Ubiquinon is soluble inside our phospholipid bilayer membrane, and it can basically move along our membrane. So what this basically does is it accepts our electrons. And when Ubiquinone accepts our electrons, it is reduced. And that reduced version of Ubiquinone is known as Ubiquinol.