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1. Read the papers
2. Watch the video
3. Create a graphic or timeline of the evolution of metabolic processes. Explain how we use Stromatolites and cherts as evidence.
5. Post a picture of the graphic and any questions or comments you have!

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Cinelecture 48 - Evolution of Metabolic Pathways

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1. Ability to store chemical energy in ATP -

2. Evolution of glycolysis

3. Anaerobic photosynthesis (H2S)

4. Use of H20 in photosynthesis

5. evolution of nitrogen fixation

6. aerobic respiration

Stromatolite-building communities include the oldest known fossils, dating back some 3.5 billion years when the environments of Earth were too hostile to support life as we know it today. … They encode the role that ancient microorganisms played in the evolution of life on earth and in shaping earth’s environments.