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What is the lowest percentage of atmospheric oxygen that any organism can survive in using aerobic respiration?
I'm wondering if there is anything on Earth that can survive in Mars' .13% oxygen, 95% carbon dioxide atmosphere?
I'm wondering if it may be possible in the future, now that we are starting to genetically modify microorganisms, to make one that can survive on Mars with the potential to alter its atmosphere. Some kind of methanogen / aerobe hybrid perhaps?
Okay, there are some serious other issues, like the low temperature and lack of water, but it is an interesting thought.
1 réponse
- ?Lv 4il y a 1 décennieRéponse favorite
It has more to do with the partial pressure of Oxygen rather than percentage.
At 15,000 feet altitude there is still 21% Oxygen, but you will only be getting half the Oxygen compared to sea level.
People can go down to 10% Oxygen at sea level before you get impairment, below 5% you will die.
I have personally breathed an atmosphere 10% Oxygen, 5% CO2 and Argon.
There are microbes which can survive a Martian atmosphere.
Source(s) : Worked in the gas industry. http://www.oxymega.com/hypoxia_oxygen_deficiency.h... http://news.nationalgeographic.com/news/2002/01/01...