Life Energy Processes

  • View
    37

  • Download
    1

Embed Size (px)

DESCRIPTION

Life Energy Processes. Photosynthesis Respiration. PHOTOSYNTHESIS. Light Reaction Dark Reaction (Calvin Cycle). Photosynthesis. Process in which a plant makes food from water and carbon dioxide and energy from the sun producing glucose and oxygen. - PowerPoint PPT Presentation

Text of Life Energy Processes

  • Life Energy ProcessesPhotosynthesisRespiration *

  • PHOTOSYNTHESISLight ReactionDark Reaction (Calvin Cycle)*

  • PhotosynthesisProcess in which a plant makes food from water and carbon dioxide and energy from the sun producing glucose and oxygen

    *

  • conversion of unusable sunlight energy into usable chemical energy, is associated with the green pigment chlorophyll. the process by which plants use the energy from sunlight to produce sugar

    *

  • process uses water and releases the oxygen*

  • *

  • Site of PhotosynthesisChloroplast is an organelle that contain chlorophyll and other pigments (carotenoid)*

  • *

  • Parts of ChloroplastTHYLAKOID disk shape (like pancake) structures that contain photosynthetic pigments (chlorophyll)GRANA a group / stack of thylakoid

    *

  • STROMA- gel like matrix surrounding the thylakoidPHOTOSYSTEMS- energy collecting units of the chloroplast (reaction center)*

  • Photons are packets of energy and the smallest visible unit of light *

  • Two Stages of Photosynthesis6CO2 + 12H2O C6H12O6 + 6O2 +6H2OLIGHT*

  • Light ReactionLight Dependent Reaction*

  • LIGHT REACTIONConverts light energy to ATP (Adenosine Triphosphate)Occurs in the thylakoid *

  • Step 1Light is absorbed by PHOTOSYSTEM II is used to split water releasing O2, H ions and energized electrons

    *

  • Step 2Hydrogen ions pass through ATP synthase to convert ADP to ATP.

    *

  • Step 3Electrons released by Photosystem II are energized by Photosystem I. Electrons are picked up by NADP+ to form a high energy NADPH

    *

  • Step 4ATP and NADPH are used in the dark reaction as source of energy

    *

  • *

  • Photosystem IISplits waterHydrogenOxygenADPATPPhotosystem I+ P+ NAPD+NAPDHNAPD+*

  • *

  • *

  • *

  • *

  • Dark ReactionCalvin CycleCarbon Fixing CycleLight Independent Reaction*

  • Carbon Fixing ReactionUse the products of light reaction (ATP and NADPH) to convert carbon dioxide to sugar (glucose)Occurs in the stroma*

  • Step 13 molecules of CO2

    *

  • Step 23 molecules of Rubisco (RuBP) use to combine with 3 molecules of CO2 to produce 6C unstable 3PGA 3 molecules of5C RUBP 3 molecules ofCO2+6C 3PGAunstable*

  • Step 36 molecules of PGA combined with 6 molecules of ATP that results to 6 molecules of PGAL and 6 ADP6 3C PGA+PAPPPAPPPAPPPAPPPAPPPAPP6 ATP6 ADP6 PGAL*

  • Step 46 molecules of PGAL binds with 6 molecules of NADPH that results to 6 molecules Highly energized PGALNADPHNADPHNADPHNADPHNADPHNADPH+6 PGAL6 NADPH6 PGALHighly Energized*

  • Step 5The 6 highly energized PGAL splits into 5 molecules of PGAL and 1 molecule of PGAL6 PGALHighly Energized5 PGAL1 PGAL*

  • Step 7The 6 highly energized PGAL splits into 5 molecules of PGAL and 1 molecule of PGAL5 PGAL1 PGAL+3 ATP3 molecules of5C RUBP Glucose*

  • *

  • *

    Light Reaction Dark ReactionSiteThylakoidStromaRaw Materials WaterADP, NADP, PCarbon Dioxide,RuDPNADPH, ATPProductsOxygenATP, NADPHGlucoseADP, NADP

  • RespirationCalvin CycleCarbon Fixing CycleLight Independent Reaction*

  • Cellular Respiration OverviewTransformation of chemical energy in food into chemical energy cells can use: ATPOverall Reaction:C6H12O6 + 6O2 6CO2 + 6H2O + Energy*

  • Photosynthesis and RespirationPhotosynthesis:Water + Carbon Dioxide Glucose + Oxygen

    Respiration:Glucose + Oxygen Water + Carbon Dioxide*

  • Two Pathways Anaerobic RespirationAerobic Respiration*

  • Aerobic Cellular Respiration Oxygen is requiredGlycolysisKrebs CycleElectron Transport Chain*

  • Both aerobic and anaerobic respiration begins with GLYCOLYSISGLYCOLYSIS conversion of glucose to pyruvatereleases energy in the form of ATP*

  • *

  • *

  • *

  • *

  • Krebs CycleAlso called as CITRIC ACID CYCLE

    Completes the breakdown of glucose and forms a 6 Carbon compound called citric acid

    *

  • Electron Transport ChainThe movement of electrons from NADH and FADH in chain-like a series of steps (staircase).As electrons drop down stairs, energy released to form a total of 32 ATPOxygen waits at bottom of staircase, picks up electrons and protons and in doing so becomes water *

  • *

  • Anaerobic Cellular RespirationNo oxygen used= anaerobic Fermentation is the anaerobic conversion of sugar to carbon dioxide and alcohol by yeast *

  • Fermentationthe anaerobic conversion of pyruvate to carbon dioxide and alcohol *

  • Fermentation Anaerobic RespirationProcess that releases some energy from glucose when no oxygen is present

  • Alcohol Fermentationthe anaerobic conversion of pyruvate to Ethanol*

  • Plants, yeast and few microbesAlcohol Fermentation

  • Lactic Acid Fermentationthe anaerobic conversion of pyruvate to lactic acid*

  • Lactic Acid

  • *

  • Photosynthesis Cellular Respiration comparison

    PhotosynthesisCellular RespirationFunctionEnergy captureEnergy releaseLocationChloroplastsMitochondriaReactantsCO2 and H2OC6H12O6 and O2ProductsC6H12O6 and O2CO2 and H2OEquation6CO2 + 6H2O light> C6H12O6 + 6O26O2 + C6H12O6 6CO2 +6H2O + energy

  • *

    PhotosynthesisRespirationRaw MaterialsWater and Carbon DioxideOxygen and Sugar

    ProductsOxygen and SugarWater and Carbon Dioxide

    WhereChloroplastMitochondriaEnergyStoredReleased

    ****