Early Evolution of Life

 

History of Earth

The evolution and conservation of life on a molecular level. Similarities between all eukaryotes and an overview of fundamental processes of life.

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  • Watch video clip from Lecture 1 (4:17 - 8:25)

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Prokaryotic and Eukaryotic Cells

Evolution of prokaryotic and eukaryotic cells and various life forms.

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  • Watch video clip from Lecture 1 (8:25 - 11:42)

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Origin of Life

RNA World Hypothesis, first organic molecules and life forms, energy sources, and oxygen. Beginning of eukaryotes, sexual reproduction, the Cambrian Period, dinosaurs, and humans.

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Life on Earth

Discussion of the history and evidence of life on Earth. Evolution of three early lineages.

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Endosymbiosis Theory

Mitochondria are ancient heterotrophic bacteria and chloroplasts are ancient cyanobacteria. Bacteria cells lived in other cells in a symbiotic relationship as energy producing machinery, and eventually evolved into modern cellular organelles.

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  • Watch video clip from Lecture 31 (9:18 - 13:14)

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Early Evolution

RNA world, cyclic photosynthesis and non-cyclic photosynthesis.

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