Chapter 3 PROTEIN STRUCTURE AND FUNCTION

Chapter 3 PROTEIN STRUCTURE AND FUNCTION - Chapter 3...

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Chapter 3 PROTEIN STRUCTURE AND FUNCTION One of the most important molecules inn living things. Summary *Complex molecules – where did they come from? *Theories *Miller/Urey Experiment *Complex molecules in living organisms *Proteins *Structure *Functions *Enzymes Complex Molecules *Where did they come from? *Outer space? Meteorites contain complex molecules *Here on Earth? Oparin and Haldane – chemical evolution; simple molecules existing on earth gradually combined to form more an more complex molecules with the help of energy from the sun. Miller/Urey Experiment *Mimicking early Earth *Hot oceans - flask with boiling water connected to… *Earth’s early atmosphere - flask with gases. *Lightning - energy from sparks. *Condensation of products from gas flask (rain) fed back into the “ocean” flask. *After weeks, the “ocean” contained complex molecules including amino acids. *“Ocean” with complex molecules was called “prebiotic soup” by Oparin. *Many scientists have confirmed these results. *Black smokers - ?present day examples
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Chapter 3 PROTEIN STRUCTURE AND FUNCTION - Chapter 3...

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