Question

State the hypothesis proposed by Oparin and Haldane. How was it experimentally proved by S.L. Miller ? Explain.

Answer 1

Answer:

hypothesis is proposed by oparin and Haldane and it is experimentally proved by s.l. miller

Answer 2

life could have come from pre-existing non - living organic molecules.

Hypothesis propsed by oparin and haldane :

• oparin and haldane proposed life could have originated from non-living organic molecules (RNA, protein) .

• formation of life was later proceeded by chemical evolution and that formation took place due to lightning, volcanic erruptions, high temprature.

• experiment performed by S. L miller :

• he created similar conditions in laboratory and created a electric discharge in a closed flask containing CH4, NH3, H2 and water vapour at 800°C .

• he observed formation of amino acids, sugars, nitrogen bases, pigemnts and fats.

• proving the present life forms could have originated from non - living macromolecules.