Identify ways in which aerobes avoid damage by toxic forms of oxygen.
1. Superoxide free radicals are a toxic byproduct of aerobic respiration. Aerobes have an enzyme called SOD (superoxide dismutase)
that converts superoxide free radicals into water and hydrogen peroxide.
2. Peroxide anion
- a byproduct of the SOD reaction - is also toxic, so we have catalase to neutralize it.
3. The enzyme catalase
converts peroxide anion into into water and oxygen, and/or the enzyme peroxidase converts it into water.
These 3 grab and break up the toxic forms of oxygen before they affect your cells