A student was simulating Urey and Millers experiment to prove the orig

1.	A student was simulating Urey and Millers experiment to prove the origin of life. The set up used by the student is givena. Find out the reasons why he could not get desired results. b. What conclusion was drawn by Urey and Miller through this experiment ? c. Compare the conclusion drawn with the theory of spontaneous generation.
Answer» a. He could not get desired results because: i. O₂ was used instead of H₂. ii. Temperature maintained was 80°C instead of 800°C. b. It was concluded that life could have come from pre-existing non-living organic molecules and their formation was preceded by chemical evolution. c. Urey and Miller observed formation of amino acids when in a closed flask CH₄, H₂, NH₃ and water vapour were heated at 800°C in presence of electric discharge. Analysis of meteorite content also reveals similar compounds indicating that similar process are occurring elsewhere in space (Chemical evolution). Urey and Miller proved that life originated abiogenetically whereas theory of spontaneous generation emphasised that units of life called spores were transferred to different planets including Earth.

A student was simulating Urey and Millers experiment to prove the origin of life. The set up used by the student is givena. Find out the reasons why he could not get desired results. b. What conclusion was drawn by Urey and Miller through this experiment ? c. Compare the conclusion drawn with the theory of spontaneous generation.

Answer»

a. He could not get desired results because:

i. O₂ was used instead of H₂.

ii. Temperature maintained was 80°C instead of 800°C.

b. It was concluded that life could have come from pre-existing non-living organic molecules and their formation was preceded by chemical evolution.

c. Urey and Miller observed formation of amino acids when in a closed flask CH₄, H₂, NH₃ and water vapour were heated at 800°C in presence of electric discharge. Analysis of meteorite content also reveals similar compounds indicating that similar process are occurring elsewhere in space (Chemical evolution). Urey and Miller proved that life originated abiogenetically whereas theory of spontaneous generation emphasised that units of life called spores were transferred to different planets including Earth.

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