Biology
Grade-8
Easy
Question
Which of the following is TRUE in case of Urey-Miller experiment?
- Life on early Earth evolved from outer space
- Amino acids can be formed from inorganic molecules
- Cells survived in the primitive atmosphere
- Simple cells can be created in a laboratory
Hint:
Amino acids are formed from inorganic molecules
The correct answer is: Amino acids can be formed from inorganic molecules
- Urey and Miller conducted the experiment to explain the origin of life on earth
- They were of the opinion that earth's early atmosphere was able to produce amino acids from the inorganic matter
- They made use of the gases like Nathan, ammonia, nitrogen, hydrogen that they thought to be present on the early earth
- Electric discharge was used to simulate the lightening present at that time
- They observed the formation of amino acids in the broth.
- Thus it was proved that organic substances were producing from inorganic compounds.
- Chemical evolution preceded biological evolution
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