Louis Pasteur's sterilised-flask experiments are historically importan…

Question

Louis Pasteur's sterilised-flask experiments are historically important because they:

Accepted Answer

D. {'text': 'Disproved spontaneous generation by showing that life arises from pre-existing life', 'label': 'D'}

Pasteur showed that pre-sterilised flasks remained free of new life from killed yeast, while flasks open to air developed living organisms. This demonstrated that life arises only from pre-existing life and dismissed the theory of spontaneous generation. It did not address how the very first life form arose.

Answer

{'text': 'Proved that life arose from non-living organic molecules in a primordial soup', 'label': 'A'}

Answer

{'text': 'Demonstrated chemical evolution under reducing atmospheres of methane and ammonia', 'label': 'B'}

Answer

{'text': 'Showed that panspermia delivered spores of life from outer space to early earth', 'label': 'C'}