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.
Photo by Science Museum London
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
