I am very new to biology, currently just a student. Recently I learned of the electron transport chain used in cellular respiration. This got me thinking. At the end of the chain, the electrons are joined with hydrogen and oxygen forming water.
It seems that all cellular activity (that I've learned about) is very careful to bind any electrons to some byproduct molecule after using them. Thus I get the impression that free electrons in a cell are dangerous. I asked my teacher about it, but he wasn't sure. So now I am dying to know, what would be the consequences of allowing a free electron to float about a cell?