The page provides an in-depth exploration of the role of dioxygen in biochemical systems, covering its historical discovery, chemical properties, reactivity, and its role as an oxidant. It delves into...The page provides an in-depth exploration of the role of dioxygen in biochemical systems, covering its historical discovery, chemical properties, reactivity, and its role as an oxidant. It delves into the reduction products of dioxygen and the electron transfer processes associated with these. The page also discusses the formation and effects of reactive oxygen species (ROS) and oxidative damage on biomolecules like proteins, lipids, and DNA.