Silly question perhaps, but did this microbe have ALL six essential elements except for the phosphorus of course which was subbed for arsenic?
More so, do ALL living life forms (organisms, bacteria and microbes etc) depend on all six elements to live or can some of these life forms say, live with three elements?
fivecups wrote:LFC2007 wrote:So, it's a kind of extremophile?
It is but thats beside the point.
andy_g wrote:it is massively surprising actually. we've known for a long long time that there are organisms - known as extremophiles - that can withstand and even thrive in conditions that would kill the majority of life forms. we also know that there are thousands, even hundreds of thousands, of species yet to be 'discovered' as one by one they appear on the scientific radar. however, with every single amazing discovery the one common factor is the basic chemistry of every organisms and their complete dependence on that conjunction of 6 key elements. this is the first time ever that an organism has been discovered that can break that arrangement, and until now nobody believed that it was even possible.
surprising is exactly what it is.
andy_g wrote:Silly question perhaps, but did this microbe have ALL six essential elements except for the phosphorus of course which was subbed for arsenic?
More so, do ALL living life forms (organisms, bacteria and microbes etc) depend on all six elements to live or can some of these life forms say, live with three elements?
all living organisms have all six elements and cannot function without them - carbon, hydrogen, oxygen, nitrogen, sulphur and phosphorous. in the case of this organism it isn't that it has substituted phosphorous for arsenic - if phosphorous is present it will use it - but that it is able to replace the phosphorous for arsenic in an arsenic rich environment. normally this would kill any other organism (that we know of) as arsenic is poisonous. they key issue here is that for the first time an organism has been seen to be able to alter the previously inviolate combination of base elements.
Emerald Red wrote:andy_g wrote:it is massively surprising actually. we've known for a long long time that there are organisms - known as extremophiles - that can withstand and even thrive in conditions that would kill the majority of life forms. we also know that there are thousands, even hundreds of thousands, of species yet to be 'discovered' as one by one they appear on the scientific radar. however, with every single amazing discovery the one common factor is the basic chemistry of every organisms and their complete dependence on that conjunction of 6 key elements. this is the first time ever that an organism has been discovered that can break that arrangement, and until now nobody believed that it was even possible.
surprising is exactly what it is.
It's always a bit of a surprise whenever something new is found, though, isn't it?
What if alien life forms were discovered tomorrow. Would it surprise you?
LFC2007 wrote:fivecups wrote:LFC2007 wrote:So, it's a kind of extremophile?
It is but thats beside the point.
Ok, so not just any old extremophile.![]()
Just had a gander here:
http://www.astrobio.net/exclusive/3698/thriving-on-arsenic
utm_source=networkbanner&utm_medium=link[/URL]
And here is some interesting discussion:
http://scienceblogs.com/pharyng....um=link
andy_g wrote:Emerald Red wrote:andy_g wrote:it is massively surprising actually. we've known for a long long time that there are organisms - known as extremophiles - that can withstand and even thrive in conditions that would kill the majority of life forms. we also know that there are thousands, even hundreds of thousands, of species yet to be 'discovered' as one by one they appear on the scientific radar. however, with every single amazing discovery the one common factor is the basic chemistry of every organisms and their complete dependence on that conjunction of 6 key elements. this is the first time ever that an organism has been discovered that can break that arrangement, and until now nobody believed that it was even possible.
surprising is exactly what it is.
It's always a bit of a surprise whenever something new is found, though, isn't it?
What if alien life forms were discovered tomorrow. Would it surprise you?
i'm not sure what your point is here, but yes it is surprising whenever something new is found, of course. but there are also levels of surprise from 'ooh, how interesting' to 'fukk me!! where the hell did that come from??'
if alien life forms were discovered tomorrow i wouldn't be surprised at all, i'd be completely gobsmacked.
and the roadmap for life hasn't been altered or rewritten or anything, but we seem to have found a fairly interesting and unexpected side road.
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