Notes 10-9-09

Antioxidents- any chemical that "soaks up" free electrons
DNA isnt strong enough to resist repeated attacks from electrons-antioxidents help prevent damage to DNA proteins caused by electrons bouncing around and breaking DNA strands/ altering protein structure
Areobic Respiration-oxygen is terminal electron acceptor
oxygen is so attractive to electrons (electronegative)
So Cell in Environmen without oxygen is also in the presence of a lot of electrons and electrons bounce around and break DNA, proteins
Aerobic-environment cells must have mechanisms for fixing DNA and protein damage caused by electrons and oxygen