No one knows how apoptosis came to be, although there are theories. Even the simplest of animals are programmed for it.
Evolutionary biologist David Barash is a man on a mission. He wants to make sure that we all know we are only human, and that means we are only animal.
About the movement of organelles: There are molecular motor proteins that haul them around!
Simple bilayers of lipids? No! Cell membranes have come into their own as masterful players in numerous cellular functions.
Cells are connected in surprising ways that molecular biologists are just now beginning to understand.