And activated simply means we've done something to the fatty acid. We attached a specific group onto that fatty acid to make it more reactive. And in this particular case, the group we attached is the Rprine group, and this is usually the coenzyme molecule, and that makes it more active. So we take the activated fatty acid and we allow it to undergo an oxidation step. And here, we're essentially extracting electrons. More specifically, we extract an H atom from this carbon, an H atom from this carbon, and electrons left over on these two carbons.