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The solar system began to form.
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Earth begins to form by space debris colliding with each other.
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The moon is formed after a collision with Earth. The planet's crust is formed.
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Lacks O2 (oxygen), so earth contains no life what so ever.
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Organ molecules join the aqueous chemical soup as amino acids, nitrogenous bases, and carbohydrates.
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organic molecules join the aqueous chemical soup as amino acids, nitrogenous bases, carbohydrates
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respiration develops within mitochondria, compartments perhaps derived form chloroplast produce a higher energy cell
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Earth's structure greatly resembles the way it does today.
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larger cells with more efficient mitochondria and chloroplasts and cells began to collaborate with on another and specialize
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cells without nuclei are single cell bacteria, and there are cells with nuclei.
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Ozone (O3) formed – protected organisms from harmful UV rays so they could exist on land
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the hereditary material is finally protected within its own chamber, the nucleus. cells begun to collaborate with each other.
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The earliest simple microscope was merely a tube with a plate for the object at one end and, at the other, a lens which gave a magnification less than ten diameters
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Lynn Margulis- theory on the origin of eukaryotic organelles, and her contributions to the endosymbiotic theory, which is now generally accepted for how certain organelles were formed.
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Rotten meat experiment proved that flies did not come from rotting meat. They were naturally attracted to it.
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Used the sealed broth experiment to disprove spontaneous generation. Was still met with ridicule.
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Redid Spallanzani’s experiment, and made sure there was no room for rebut from.
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Periodic elements first came into existence as a result of the high temperature of earth gradually cooling, along with ultraviolet radiation.
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Revised and tested Oparin’s hypothesis, which was found to be true.
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Thomas Cech- a chemist who shared the 1989 Nobel prize in chemistry with Sidney Altman, for their discovery of the catalytic properties of RNA. Cech discovered that RNA could itself cut strands of RNA, which showed that life could have started as RNA.
