S.L. Miller's 1953 experiment exposed a mixture of CH4, H2, NH3 and wa…

Question

S.L. Miller's 1953 experiment exposed a mixture of CH4, H2, NH3 and water vapour to electric discharge at 800 degrees Celsius. The primary outcome observed was the formation of:

Accepted Answer

C. {'text': 'Amino acids, the building blocks of proteins', 'label': 'C'}

Miller created conditions simulating early earth's reducing atmosphere and produced amino acids by electric discharge. Other workers in similar setups obtained sugars, nitrogen bases, pigments and fats. The experiment supported chemical evolution but did not produce cellular life or self-replicating polymers.

Answer

{'text': 'Self-replicating ribonucleic acid (RNA) molecules', 'label': 'A'}

Answer

{'text': 'First prokaryotic cells with functional membranes', 'label': 'B'}

Answer

{'text': 'Functional enzymes catalysing biochemical reactions', 'label': 'D'}