r/Creation • u/Web-Dude • 15h ago
biology The Simple Path from Prebiotic Chemistry to Life
This simple chart is the recipe for life, according to the latest origin of life research. Just follow these simple steps and you can produce your own life forms.
The chart comes from N. Kitadai et al. Origins of building blocks of life: a review, Geosci. Front. (2018)
The chart is actually showing many real reactions that actually work (in a laboratory), but there are many missing (unknown) steps and the interconnections between them is largely hypothetical.
What the chart isn't telling you:
- Incompatible Conditions: Most of the reaction require distinct and incompatible chemical and environmental conditions (different temperatures, pH levels, solvents, concentrations, chemical environments, etc), so the links between each reaction should be interpreted as, "...and then stuff happens here..."
- The Mass Transportation Problem: Molecules need to reach the right environments, in the right concentrations, without degrading, dispersing or being contaminated.
- Dismal Yields: There is no accounting for cumulative yield (that enough material survives the complete sequence) and no demonstration of overall mass balance.
- The Purification Problem: The needed molecules have ti be separated from competing compounds and unwanted byproducts.
- The Homochirality Problem: No way for producing, amplifying and preserving the chirality that life needs, across the entire pathway.
- The Probability Problem: Just starting with the reasons above, you've probably already inferred that it's highly unlikely that any of this is going to occur naturally across all of the multiple, exacting conditions required.
And somehow, at the end of this abstruse chemical obstacle course, we're still left with:
- The Information Problem: Even if you manage to make molecular building blocks, that still doesn't explain the emergence of functional, self-replicating genetic information. The molecules still have to organize themselves into a system that can:
- store information
- use energy
- maintain themselves
- reproduce.
Easy peasy.
I think that if one looks at this honestly, it doesn't inspire much hope. Maybe it inspires hubris, but the reality is that we can't even take a dead cell (with all of its intricate machinery still present) and make it alive again; yet we think we can construct a living cell from parts, and then insist that nature could do it all on its own, without direction, and without any real purpose or goal in mind.
TL;DR: you just need to move enormous amounts of pure molecules (in the right forms and concentrations) around through very different chemical environments, in the right order, at the right time, while preventing them from degrading, dispersing, or reacting with the wrong substances.
Oh, and some of the necessary conditions for one reaction would actually destroy the products of another.
