To answer the question about the electron as honestly as I can, there is no suggestion anywhere currently that it's anything other than a point particle -- and so indivisible. Perhaps, like the atom, probing it at higher energies still will reveal yet more structure, although presumably there has to be a limit somewhere.
That said, the electron is destructible in pair annihilation processes. When an electron meets a positron, the two annihilate and create, say, a photon. This may decay into yet more electrons, but at any rate there was a change from the original electron into a "new" one. In the process of change, much of the information of the original electron is lost (although if you had thousands or millions of such processes you would be able to make some claims about the state the original particle was in, but this is an average (or, alternatively, if you were the one who started the process off in the first place, as happens in particle colliders)).
One of the lessons of modern physics experiments is that complex states have a tendency to last for very little time at all unless they are supported or deliberately held in situ. Whether this applies equally to consciousness or not I don't know, but I suspect that it will mean that consciousness is too dependent on the brain to last for long without it.
Anyway, University Challenge is starting so I will be back later.