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from the It's-the-end^W-beginning-of-the-world-as-we-know-it? dept.
Researchers have demonstrated that an enzyme-free metabolic pathway using sulfate radicals can mirror the Krebs cycle:
A set of biochemical processes crucial to cellular life on Earth could have originated in chemical reactions taking place on the early Earth four billion years ago, believes a group of scientists from the Francis Crick Institute and the University of Cambridge. The researchers have demonstrated a network of chemical reactions in the lab which mimic the important Krebs cycle present in living organisms today. In a study published in the journal Nature Ecology and Evolution, they say it could explain an important step in how life developed on Earth.
[...] One central metabolic pathway learned by every A-level biology student is the Krebs cycle. But how did this essential set of chemical reactions, each step catalyzed by an enzyme, first arise? Each step in the cycle is not enough by itself. Life needs a sequence of these reactions, and it would have needed it before biological enzymes were around: Amino acids, the molecular components of enzymes, are made from products of the Krebs cycle.
The research group from the Francis Crick Institute and the University of Cambridge say their demonstration offers an answer. They have shown an enzyme-free metabolic pathway that mirrors the Krebs cycle. It is sparked by particles called sulphate radicals under conditions similar to those on Earth four billion years ago. Senior author Dr Markus Ralser of the Francis Crick Institute and University of Cambridge explains: "This non-enzymatic precursor of the Krebs cycle that we have demonstrated forms spontaneously, is biologically sensible and efficient. It could have helped ignite life four billion years ago."
Found at ScienceDaily.
Sulfate radicals enable a non-enzymatic Krebs cycle precursor (open, DOI: 10.1038/s41559-017-0083) (DX)
(Score: 2) by marcello_dl on Wednesday March 15 2017, @08:21PM (2 children)
Lame trolling anyway:
No god is provable as such from inside the universe, tell me something new.
Genesis 3,19 "Pulvis eris". What again? "You were dust". The book on which the monotheistic religion and two troll fakers (logically they can't be all true) is perfectly compatible with life arising from matter. The soul, the spirit, what makes man a man, that's another pair of shoes but it probably don't interest science if it cannot be subjected to experiments.
You merely disproved an interpretation made in contrast with the old testament and with a terrible naive model of God. A creator god, creator of time, so outside time, does not intervene at one point in time. He intervenes in time if he wishes so, but all past present and future is irrelevant to him.
Before you cry shifting goalposts and similar idiocy, see my posting history, green site too.
(Score: 2) by Thexalon on Wednesday March 15 2017, @08:53PM (1 child)
Many claim otherwise.
But proving the Genesis creation wrong is very easy: It starts off with nothing but water and land being exposed / created underneath it, whereas we now know that the land came first and the water arrived later carried on comets that collided with the land. Furthermore, it makes the sky into water as well, which it mostly isn't.
The only thing that stops a bad guy with a compiler is a good guy with a compiler.
(Score: 2) by marcello_dl on Thursday March 16 2017, @01:03AM
Genesis is not an English book. It is the transcription of oral tradition. It contains at least one symbol, the number 144000, 12x12x1000. One symbol says everything else can be symbols. Hebrew is a concrete language lacking abstract terms. http://www.ancient-hebrew.org/language_philosophy.html [ancient-hebrew.org]
Ergo your assertion is weak, you proved nothing. You can just believe one meaning more than others. Personally, playing your game, I would have put the big bang at "let there be light", all that is before is meta. OTOH I have doubts whether the concoction called "big bang" is valid and whether "in the beginning" has already the arrow of time ticking in one direction.