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BIO 110, Life Science

BIO 110, Life Science. Summer 2012. What is food? What’s it used for?. Energy Repair Specialized chemicals Carbohydrates Lipids Proteins Vitamins and minerals. Producers and consumers. Producer: converts environmental energy into a biologically useful form Photosynthesis

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BIO 110, Life Science

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  1. BIO 110, Life Science Summer 2012

  2. What is food? What’s it used for? • Energy • Repair • Specialized chemicals • Carbohydrates • Lipids • Proteins • Vitamins and minerals

  3. Producers and consumers • Producer: converts environmental energy into a biologically useful form • Photosynthesis • Chemosynthesis • Consumer: uses energy available in other organisms

  4. Oxidation and proton pumps • Chemical bond energy • Redox • Oxidation: losing electrons • Reduction: gaining electrons • Hydrogen’s “Lonely Nucleus Club” • Moving electrons and protons • It all ends up at ATP

  5. Using chemical energy • Glycolysis/Fermentation • Split that glucose! • Capture the oxidation electrons • Make ATP • Byproducts • Mitochondria • Citric Acid Cycle • More oxidation, lots of electrons, some ATP, CO2 • Electron Transport • Using the electrons to make…ATP! • Electrochemical gradients • Where to dump the protons?

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