We react them to form a single hydrogen peroxide molecule which is actually itself an unsafe molecule. And we'll see what is done with this in just a moment. But we also form this diatomic oxygen and this diatomic oxygen is in fact a safe molecule. Now, inside eukaryotic cells, the cells of our own body we actually have two forms of super oxide this mutase. One form depends on manganese and the other form depends on copper and zinc atoms. So the manganese containing this mutase is found in the mitochondria of our cells while the copper and zinc dependent this mutase is actually found in the cytoplasm of our body.