The Great Oxidation Event (GOE) some 2.4 billion years ago established the oxygen-rich atmosphere that many living things ...
There are two types of respiration: Aerobic respiration occurs in the presence of oxygen and in most cells most of the time. Anaerobic respiration occurs without oxygen and much less frequently ...
The paper, titled "Simultaneous aerobic and anaerobic respiration in hot spring chemolithotrophic bacteria," is published in the journal Nature Communications. Keller was working with bacterial ...