Carbon compounds {carbon-based life} can be soluble or insoluble and have intermediate-stability chemical bonds, so they can form and break at moderate energies.
organic molecules
Organic molecules formed in seas. Stable forms persisted. Persisting molecules aggregated.
nucleic acids
When nucleotide concentrations were great enough, nucleotides linked. Nucleic acids used themselves as templates to make copies. Good copiers persisted and used more nucleotides. Mutations resulted in populations with property ranges.
peptides
When amino-acid concentrations were great enough, amino acids linked. Peptides assisted chemical reactions and formed structures.
oxygen
Later, photosynthesis added oxygen to atmosphere, using water, sunlight, and atmosphere carbon dioxide.
Biological Sciences>Biology>Life>Origin>Molecule
4-Biology-Life-Origin-Molecule
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Date Modified: 2022.0224