What Do You Mean By Primordial Biomolecules ?

1.	What Do You Mean By Primordial Biomolecules ?
Answer» Oparin in the Soviet Union and J. B. S. Haldane in Britain during the 1920s first postulated that organic compounds AROSE by reactions between various inorganic components of the atmosphere and geosphere, activated by the energy of UV-light, electric discharges, heat, or other forms of energy. These organic compounds were mainly AMINO acids and sugars, nitrogenous bases, etc., which gradually concentrated in the primitive sea. These organic compounds are known as the primordial biomolecules. In the later period of chemical evolution of earth these primordial building blocks are believed to have undergone abiotic condensation to form primitive polypeptides, polynucleotides, polysaccharides and lipids. From this primordial organic soup, the first living organisms are believed to have arisen. Such compounds or their precursors have been detected in ancient fossils, in meteorites and in interstellar space. But a BIG gap remains between these molecules in a state of solution and an organized cell. The abiotic formation of primordial biomolecules may be understood but their transformation to the cellular organization when life first appeared is indeed a puzzling phenomenon. It is highly speculative. Formation of proteinoid droplets having a MEMBRANE like structure has been suggested by Sidney Fox at the University of Chicago and is very well documented in the laboratory.

Answer»

Oparin in the Soviet Union and J. B. S. Haldane in Britain during the 1920s first postulated that organic compounds AROSE by reactions between various inorganic components of the atmosphere and geosphere, activated by the energy of UV-light, electric discharges, heat, or other forms of energy.
These organic compounds were mainly AMINO acids and sugars, nitrogenous bases, etc., which gradually concentrated in the primitive sea. These organic compounds are known as the primordial biomolecules.
In the later period of chemical evolution of earth these primordial building blocks are believed to have undergone abiotic condensation to form primitive polypeptides, polynucleotides, polysaccharides and lipids.
From this primordial organic soup, the first living organisms are believed to have arisen. Such compounds or their precursors have been detected in ancient fossils, in meteorites and in interstellar space. But a BIG gap remains between these molecules in a state of solution and an organized cell.
The abiotic formation of primordial biomolecules may be understood but their transformation to the cellular organization when life first appeared is indeed a puzzling phenomenon. It is highly speculative. Formation of proteinoid droplets having a MEMBRANE like structure has been suggested by Sidney Fox at the University of Chicago and is very well documented in the laboratory.

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