The major processes needed for the origin of life on Earth were the appearance of the first organic compounds, their assembly into macromolecules, self-replicating properties and separation by means of membranes.
- It has been proposed that life on Earth began at least 3.6 billion years ago.
The major processes needed for the origin of life on Earth were:
- The appearance of the first organic compounds such as amino acids and nucleotides, the building blocks of proteins and nucleic acids respectively. It has been proposed that such compounds emerged from spontaneous synthesis or came from meteorites.
- The assembly of the first organic molecules into larger macromolecules (e.g., RNA and enzyme proteins).
- The ability of auto-replication of the acid nucleic (especially RNA).
- The packaging of organic macromolecules by means of biological membranes. These membranes were able to maintain a relatively constant internal system (i.e., homeostasis) different from the surrounding environment.
In conclusion, the major processes needed for the origin of life on Earth were the appearance of the first organic compounds, their assembly into macromolecules, self-replicating properties and separation by means of membranes.
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