Answer the following questions based on the experiment conducted by S.L. Miller in 1953:
(a) Name the gases present in the closed flask.
(b) Why was the flask fitted with electrodes?
(c) Write the observation he made.
(d) State the significance of the observation made by him.
Answers
Answer:
a) H2(hydrogen), NH3(ammonia), H2O(water) and CH4(methane) were the gases present in the flask.
b) The flask was fitted with electrodes to create an electric discharge.
c) S.L. Miller with his experiment showed that chemical evolution took place before organic evolution, i.e. first non-living inorganic molecules were formed which later formed organic evolution.
He, in his experiment formed similar conditions that the Earth was thought to have at the time of origin. He used electric discharge, used NH3, CH4, H2 to give reducing nature to the environment and also used water vapours at 800 degree Celsius.
d) In his experiment as a result he observed the formation of amino acids, which thereby proved the theory of Chemical evolution.
Hope it helps..
✌
Answer:
a. ammonia, methane, water vapours and hydrogen gases are present
b. the flask is fitted with electrodes to create the primordial earth conditions and atmosphere
c. he observed formation of giant molecules such as RNA,Protein and polysacchrides etc. and proved that life is originated from the organic molecules