EVERYDAY SCIENCE

Detailed explanation-1: -Oparin believed that the life developed from microscopic spontaneously formed spherical lipid molecules held together by electrostatic forces, probably the earliest form of cells. These molecules most likely functioned as enzymes, essential for the biochemical metabolic reactions necessary for life’s evolution.

Detailed explanation-2: -The Oparin-Haldane hypothesis suggests that life arose gradually from inorganic molecules, with “building blocks” like amino acids forming first and then combining to make complex polymers.

Detailed explanation-3: -Summary: In 1924, Russian biochemist Alexander Oparin claimed that life on Earth developed through gradual chemical changes of organic molecules, in the “primordial soup” which likely existed on Earth four billion years ago.

Detailed explanation-4: -Oparin’s definitive work is The Origin of Life on Earth, 3rd rev. ed. (1957). Although he is best known for his contributions to studies of the origin of life, Oparin also devoted considerable effort to enzymology and to the closely related subject of industrial biochemistry.

Detailed explanation-5: -The heterotrophic origin of life proposed by A. I. Oparin in the 1920s was part of a Darwinian framework that assumed that living organisms were the historical outcome of a gradual transformation of lifeless matter.