Sciencescienceevolutionlife

Mon May 6, 2019, 07:12 AM

could life evolve from a chemical process?

scientists in europe have a few ideas how .....

https://phys.org/news/2019-05-life-biochemical-networks-spontaneously-earth.html



"Scientists investigating the origins of life on Earth have long struggled to explain how life's biochemistry got its start over 4 billion years ago. Biochemistry is organised around just five universal metabolic precursors built from C, O and H - just like heavy traffic in a big metropolis is organized around a few transit hubs. Why life uses the molecules and chemical reactions that it does, among countless alternatives, is a complete mystery.

A group of researchers led by Prof Joseph Moran at the University of Strasbourg has spent the past few years working on the origins of biological metabolism. "The idea that biological metabolism had a closely related chemical precursor that used similar intermediates and transformations is an attractive option," says Moran. Recently, the group recreated a purely chemical equivalent of the AcCoA pathway, a set of reactions used by microbes to produce acetate (two carbons) and pyruvate (three carbons) from CO2. Building compounds larger than three carbons from building blocks made from CO2 was where progress stalled. To accomplish such feats, life relies on complex enzymes and a chemical energy carrier, ATP. But both enzymes and ATP are complex structures that couldn't have existed on a lifeless Earth. How then did life build its biochemistry before enzymes and ATP?"

the researchers have demonstrated a few ideas. if they succed in creating a life like process ..........

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Reply could life evolve from a chemical process? (Original post)
rampartb May 2019 OP
SatansSon666 May 2019 #1
quad489 May 2019 #2
rampartb May 2019 #3
SatansSon666 May 2019 #4

Response to rampartb (Original post)

Mon May 6, 2019, 07:41 AM

1. It all boils down to fuel (food) and how chemical reactions were able to continue and

Eventually self-replicate.
Life is chemistry after all.

There may have been a precursor to ATP that carried the energy required for replication and as the process became more complex so did the means of delivering energy for the reactions.
However, since that compound would be "extinct" now it would be very difficult to replicate it's purpose without knowing what elements and in what combination and amounts it consisted of.

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Response to rampartb (Original post)

Mon May 6, 2019, 08:13 AM

2. Cool, looking forward to when they can replicate the process........

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Response to quad489 (Reply #2)

Mon May 6, 2019, 08:37 AM

3. i don't think we will see that soon.

but yes, i'd be interested in the ultimate durections this could take.

do you have any ethical concerns? fears of "playing god?"

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Response to rampartb (Reply #3)

Mon May 6, 2019, 08:58 AM

4. My guess is they'll fluke it.

They'll be testing something and maybe giving more or less energy to the reaction will fill in a blank for them. Educated guesses lead to accidental discoveries all the time and if they are good at what they do the process will be mapped out as to how they got to that point, then they'll have to figure how to do it again and why it happened that way.
Perhaps this compound is still around in our bodies and was incorporated into another function as well.

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