Oxygen: Friend and foe!

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Dokumenter

  • bio041040018

    Forlagets udgivne version, 342 KB, PDF-dokument

DOI

It is generally believed that the Earth's atmosphere did not contain oxygen until around 2500 million years ago (Mya) when oxygen-evolving photosynthetic bacteria arose. At around 800-500 Mya, the oxygen concentration increased sharply to reach the 21% we have today. So, it seems highly likely that life arose as anaerobic organisms, which then evolved to tolerate oxygen and finally, to use it as a terminal acceptor for the energy-producing oxidative processes in the respiration of aerobic bacteria and mitochondria in eukaryotic cells. The respiratory processes employed by typical aerobic organisms today have a wide range of mechanisms to deal with the troublesome side effects of living with a high oxygen concentration.

OriginalsprogEngelsk
TidsskriftBiochemist
Vol/bind41
Nummer4
Sider (fra-til)18-21
Antal sider4
ISSN0954-982X
DOI
StatusUdgivet - aug. 2019

Se relationer på Aarhus Universitet Citationsformater

ID: 174401182