They need to be carefully assembled. Their form and their function are intertwined. If the form of a building is damaged in any way, its function or performance is, of course, altered. Just as the building materials for a house must be carefully and intelligently put together in the right way, in the right order, and with the proper building tools, so it is with living structures. Our body is no exception.
Electrons are the binding materials holding molecules together.
They are the rivets, bolts, nails, and screws of the body. Electrons are usually intended to be in pairs as they whiz around the outside of atoms and give stability to the form of the atom or molecule. When for any reason these paired electrons become separated, the molecule is damaged. Usually there are ample free electrons in the vicinity to satisfy the demands of the free radicals, but when the level of free radicals increases beyond a certain point, the cellular protective electron-donating mechanisms, which usually keep these molecules in check, is exceeded. When that happens, great numbers of these free radicals or, in our analogy, terrorists' bullets, are unleashed, all greedily looking for electrons wherever they can be found.