Evolution, Science & Religion;oxygen (Evolution)

by David Turell , Monday, July 30, 2012, 20:57 (4500 days ago) @ David Turell

Try:
> > > > http://agnosticsinternational.net/forum/viewtopic.php?f=53&t=1256
... > > > and
> > > > http://www.youtube.com/watch?v=ramBFRt1Uzk
> > > > 
> > > > When the first photosynthesizers started producing oxygen, it was a disaster for life on earth.
> > 
> > Uncontrolled metabolism with oxygen is nasty. Think simply of fire, or rust. Why is it that antioxidants are advised in our diets? When oxygen first arrived living systems had to be developed to handle it. From a logic standpoint photosynthesis is the better way to go if you are alive. But oxygen allows for a better energy production, which mobile life needs.
> 
> Research in methanogens, anaerobic bacteria that avoid oxygen:
> 
> http://phys.org/news/2012-06-oxygen-sensor-dna-transcription.html-More on the problem oxygen created when it appeared:-http://blogs.scientificamerican.com/lab-rat/2012/07/29/the-origin-of-breathing-how-bacteria-learnt-to-use-oxygen/?WT_mc_id=SA_DD_20120730