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Origins Of Life 😍

Published on Nov 18, 2015

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PRESENTATION OUTLINE

LOUIS PASTEUR

  • He took two flasks and filled them with broth from soup.
  • He had one that was straight necked and had one that was 'S' shaped.
  • He boiled the broth for a couple days and left it at room temperature.
  • He then saw that the one with a straight neck was cloudy and the one in a 'S' form was normal.
Photo by Templestream

WHAT HE CONCLUDED

  • Pasteur said that if spontaneous generation had been a real phenomenon the broth in the curved-neck flask would have eventually become reinfected because the germs would have generated.
  • But the curved-neck flask never became infected, indicating that the germs could only come from other germs.

MILLER AND UREY

  • This experiment with a flask chamber.
  • Miller and Urey pumped a mixture of gases into that were present in Earth's atmosphere .
  • An electric current was dish discharged through a condenser to correct any liquid products.
  • This resulted in the creation of coacervates.
Photo by Ludovico Cera

WHAT THEY CONCLUDED

  • The ideas they added about the origin of life was that first life forms arose through naturally occurring chemical reactions.
Photo by katerha

OPARIN'S EXPERIMENT

  • Oparin actually didn't do an experiment.
  • He came up with the idea of Miller and Urey's experiment.
  • He believed that the first life ever appeared in warm primitive oceans.
Photo by kdinuraj

WHAT HE CONCLUDED

  • Oparin concluded about the way of life that organic molecules could be formed from biogenic materials in the presence of an external energy source.

HOW DID LIFE BEGIN ON EARTH

  • What we can conclude from these experiments is that life on earth did start from various chemical reactions and organic molecules.
Photo by NASA APPEL