Evolution of Aerobic Metabolism
Interesting fact: Breathing 100% pure oxygen for long periods of time can cause changes in the lungs, which are potentially harmful.
An Inevitable Tendency
​Coexisted Risks and Benefits
The accumulation of oxygen in the atmosphere caused by large oxidation events triggered a general adaptation to aerobic metabolism, i.e., cellular respiration involving oxygen.
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Organisms are adapted to acquire abundant oxygen potential in respiration.
One of the great advantages of aerobic respiration is that it releases energy that far exceeds that of the ancient anaerobic respiration methods, leading to more possibilities - greater body weight, more complex body structures and greater motor capabilities.
However, during the high redox potential of oxygen collection
Produces oxidants - accumulation of ROS in cells can lead to oxidative damage to services
Evolved strategies to detoxify (antioxidants) reactive oxidants (O2.-, H2O2, OHË™, 1O2) produced during aerobic metabolism
Oxygen soon becomes indispensable for metabolic activity.
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