early autotrophic bacteria and the developement of the atmos

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honorsbiostudent
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early autotrophic bacteria and the developement of the atmos

Post by honorsbiostudent » Thu Jan 22, 2009 7:07 pm

ok so this is sort of evolutionary but it is for molecular bio I promise. umm, just wondering what role early autotrophic bacteria played in the developement of our atmosphere. also, what are three things that resulted from their activity. I know that they (the early autotrophs) released enough oxygen into the atmosphere to cause primary heterotrophs to die and secondary heterotrophs to arise but Im not really sure of what else happened. help would be greatly appreciated

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canalon
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Post by canalon » Sat Jan 24, 2009 3:47 pm

What can you assume about the O2 sensitivity of most of the bacteria before there was O2 in the atmosphere? What can be the effect of an increasing O2 concentration in the atmosphere?
Patrick

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