The theory that life arose from non-living matter through the gradual synthesis of organic molecules from inorganic precursors.

The hypothesis that organic molecules were transported to Earth via meteorites or other celestial events.

Layered sedimentary structures formed by microbial communities, providing early evidence of life.

RNA molecules with catalytic activity, supporting the RNA world hypothesis.

The theory that eukaryotic cells evolved from symbiotic relationships between prokaryotes.

The hypothesis that RNA was the primary form of genetic material in early life, capable of both storing information and catalyzing reactions.

It allowed for the formation of complex organic molecules from inorganic precursors, as oxidation was minimized.

Supports the RNA world hypothesis by showing RNA can act as both genetic material and catalyst.

The evolution of eukaryotic cells with mitochondria and chloroplasts.

Increased complexity, size, and protection for the organism.

1: Formation of inorganic precursors. 2: Synthesis of monomers (amino acids, nucleotides). 3: Polymerization of monomers into polymers (proteins, nucleic acids). 4: Development of self-replicating molecules.

1: Host cell engulfs an aerobic bacterium. 2: Engulfed bacterium evolves into mitochondria. 3: Host cell engulfs a photosynthetic bacterium. 4: Engulfed bacterium evolves into chloroplast.

1: Unicellular organisms form colonies. 2: Cells within colonies begin to specialize. 3: Specialized cells become interdependent. 4: True multicellularity emerges with tissues and organs.