Cellular Respiration Converting Chemical Energy from Carbohydrates into Chemical Energy of ATP

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    17-Jan-2016

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  • Cellular RespirationConverting Chemical Energy from Carbohydrates into Chemical Energy of ATP

  • Cellular Respiration (Aerobic )How do cells transform matter and energy? What are the major inputs and outputs of cell respiration? What is the relationship between cell respiration and study photosynthesis?

  • Cellular Respiration and PhotosynthesisThese are opposite processesThe products of photosynthesis are the reactants of respiration and vice versa. Energy stored through photosynthesis is released through cellular respiration

  • Cellular Respiration and Photosynthesis Photosynthesis stores small packets of energy in a larger packet.Like turning in one hundred $1 bills to get a $100 billCell Respiration takes a lot of energy and breaks it into smaller packets.Like turning in a $100 bill and getting five $20 bills.

  • In the mitochondria of living things, oxygen helps the break- down of sugars (glucose) to release energy useable by the cell (ATP) Cellular Respiration OverviewProducts and Reactants(1) C6H12O6 + (6) O2 (6) CO2 + (6) H2O + ATP

  • GlucoseGlycolysisPyruvic acidKrebs CycleElectron Transport ChainMitochondriaCO2H2O O2236H+Glycolysis is the anaerobic process of breaking down glucose to generate ATPKrebs Cycle and Electron Transport require oxygen to further break down carbon molecules to generate ATP Cellular Respiration Overview

  • GlycolysisGlucose (6 carbon sugar) breaks down into pyruvate (3 carbon molecules ) and ATP (energy)Similar to reversing the final stage of photosynthesis when two 3-carbon sugars were used to make glucose

  • Krebs CyclePyruvate (3 carbon) breaks down into carbon dioxide (1 carbon) and electrons are used to generate ATP (energy) Similar - in reverse - to the Calvin cycle in photosynthesis

  • Electron Transport ChainElectron Transport ChainElectrons generated during glycolysis and Krebs cycle are used to generate ATPAt the end they come together with oxygen to form water Again, similar, but in reverse of the electron transport chain in the light dependent reactions of photosynthesis

  • 36 ATP units are released from one glucose unitA unit of glucose molecules contains 686 kcal of stored energy. A unit of ATP stores 7.5 kcal. How efficient is the transformation from energy stored in glucose to energy released as ATP?Energy Transformed - Cell Respiration

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