Miller and Urey's Experiment

Subject: Biology

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This note contains detail information about Miller and Urey's experiment.The energy was supplied by heating liquid chamber and electric sparks from electrodes kept in a gaseous chamber
Miller and Urey's Experiment

Experimental verification to support Biochemical origin of life

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verification to support the Biochemical origin of life

Stanley Miller and Harold C. Urey(1953) tried to recreate the conditions that might have existed on the primitive atmosphere. For that, they had prepared the apparatus i.e. glass tubes and glass chambers which were fitted tightly as shown in the diagram. They kept H2, CH4, NH3and H2Oin gaseous chamber and allowed to condense into liquid and were accumulated in another chamber called liquid chamber.

The energy was supplied by heating liquid chamber and electric sparks from electrodes kept in a gaseous chamber. The experiment was continued for a week. The products obtained were condensed and collided into the lower chamber. The product was tested and a large number of amino acid along with alanine, glycine, aspartic acid and other organic compounds were formed.

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The result of this experiment suggested that electricity from lightening in the primitive atmosphere containing H2, CH4, NH3 resulted to form amino acids and other complex organic compounds.

Synthesis of inorganic materials with earth surface was possible in reducing atmosphere to form life. That was no longer in today's oxidising atmosphere. So, now life originated from preparation are only in today's context.

Things to remember
  • Stanley Miller and Harold C. Urey(1953) tried to recreate the conditions that might have existed on primitive atmosphere.
  • They kept H2, CH4, NH3and H2Oin gaseous chamber and allowed to condense into liquid and were accumulated in to another chamber called liquid chamber.
  • Energy was supplied by heating liquid chamber and electric sparks from electrodes kept in a gaseous chamber. 
  • Synthesis of inorganic materials of earth surface was possible in reducing atmosphere to form life. That was no longer in today's oxidising atmosphere. So, now life originated from preparation are only in today's context.
  • It includes every relationship which established among the people.
  • There can be more than one community in a society. Community smaller than society.
  • It is a network of social relationships which cannot see or touched.
  • common interests and common objectives are not necessary for society.

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