https://www.quora.com/How-could-abiogenesis-happen-Is-there-a-possible-scenario
HOW COULD ABIOGENESIS HAPPEN ? IS THERE A POSSIBLE SCENARIO ?
Well, in a nutshell, we know that life is made from non-life, the elements on the periodic table, the way a house is made of non-houses, such as bricks and lumber, etc…. not smaller houses, etc. :DMost of what you associate with “life” exists in non-life… and, some of that is because the definition of “life” is a bit outdated.This is a bit like “death”… another outdated term.As we discover more and more about life and how it works, our old definitions start to not apply as cleanly.For example, if you go back far enough, if you stopped breathing you were “dead”.If you started breathing again, you had “come back to life”.Later, if your heart stopped beating, you were “dead”.If your heart started beating again, you had “come back to life”.The discovered that the brain is still working, even if a bit wonky/hallucinating, etc… when the heart is stopped, so, you were not “really” dead yet… just dying.When restarting breathing, and then restarting the heart, became commonplace enough, if your brain stopped electrical activity, you were “dead”. So far, no one who was confirmed to be without brainwaves has ever “come back to life”… but it is not impossible.If we find a way to re-start brains, than that too will become an obsolete way to determine “death”.The definitions of life have always precluded viruses and prions for example.A possible scenario?Well, in nature, without life, even in outer space, self replicating molecules, and organic molecules can form.We can find protein and amino acids forming with no living source for example.Amino acids can assemble and disassemble proteins, and proteins can assemble and disassemble amino acids.Proteins can assemble and disassemble RNA. RNA can assemble and disassemble proteins.RNA can assemble and disassemble DNA. DNA can assemble and disassemble RNA.A prion can move, by folding and unfolding, and can make copies of itself from things around it.A prion has no RNA, or DNA… it is a protein.A virus is a protein with a genome. Viruses have RNA, and/or DNA genomes.They too can make copies of themselves from things around them… and the copies can inherit their genomes.Some viruses have outer lipid membranes, like simple bacterial cells.Some viruses infect other viruses, so they do not need living things to infect.Some viruses are larger than some bacteria.Some viruses have remnant traces of their genomes that regulate metabolic functions, like simple bacteria have.If you get these non-living things inside of you, it is considered an infection, not being poisoned by a chemical… because they are so close to be ing what we call “alive”.So, before “life”, we see things that have genomes that can be inherited, outer membranes like cells, traces of metabolic regulation, and so forth.If they made the copies inside their membrane, instead of outside of it, basically, that would be a simple bacteria.A MAN does not make progeny inside of himself… he has a genome that he sends OUTSIDE of himself, to “infect” another cell, and trigger that cell to make copies of his genome…using parts from the OTHER cell’s genome. IE: The man sends his genome (in a sperm) into another cell (an egg), and, triggers that cell to start making copies.It is analogous to how a virus replicates.It sends it’s genome into a cell, and triggers that cell to make copies. :DSo, we have a connect the dots sort of picture of how it all works….. and are working on the spaces between the dots. 😀
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