RAZD, strings are the basic component of atoms. Once atoms developed from the strings, then one of the common hypotheses for the origin of life is the RNA World, which postulates that the oceans had RNA (or RNA-like) molecules floating around and catalysing their own reproduction. These RNAs would have been the very first genomes.
We know already that aspartate, glutamate, glycine, alanine, serine, leucine, and valine - the most common amino acids - can be found in volcanic lava and other abiotic substrates. Amino acids are what RNAs interact with, so their natural presence hints that they could have acted as an "enabler" for the evolution of the very first genes, which would have been molecules that reacted with them for some benefit.
Fast forward a bit and these gene-molecules combined together into a chain, RNA, which uses the amino acids for energy, using that energy to trigger catalysising their own reproduction.
Put these wayward RNAs into a self-built bilipid membrane (lipids join together naturally) where amino acids can be concentrated, and you have yourself the very first protocell/"true organism".