Bio 201 S10 Lect 2 (True) v2r

Uscedudeptmda180evolu9onimages aminoacidswereformed

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Unformatted text preview: new life forms –  Complexity, mul9cellularity –  Cambrian Explosion Jumping back to the beginning: 4 billion years ago: Earth started to cool, crust started to solidify (but s9ll many volcanoes). Atmosphere: Very lille oxygen No ozone layer, lots of UV radia9on Life arose ‐ how? But life did once arise on Earth •  What is life? – ReplicaAon •  Transmission of informaAon p 40: Box 3.1 – Catalysis •  TransformaAon of energy and conversion to structure research_teams/intracellular_proteolysis/ Research/UPS.png The molecular basis...
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