Consider the following statements i Early atmosphere was reducing without free oxygen...........

Science Affairs Chemistry

Consider the following statements

i. Early atmosphere was reducing(without free oxygen) comprising water vapour, hydrogen, ammonia and methane.

ii. Most essential criteria for the origin of life is presence of water.

iii. Life originated from complex organic molecules formed from early atmospheric gases reacting with water to form the so called Haldane’s hot dilute soup.

Which of the statement(s) is/are true?

Only 1

Only 2

2 and 3

1, 2 and 3

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Explanation:

Haldane proposed that the primordial sea served as a vast chemical laboratory powered by solar energy. The atmosphere was oxygen free, and the combination of carbon dioxide, ammonia and ultraviolet radiation gave rise to a host of organic compounds. The sea became a 'hot dilute soup' containing large populations of organic monomers and polymers. Haldane envisaged that groups of monomers and polymers acquired lipid membranes, and that further developments eventually led to the first living cells.