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SET IT TO THE SIDE!

SET IT TO THE SIDE!. Photosynthesis. compare the reactants and products of photosynthesis and cellular respiration in terms of energy and matter;. Research into PHOTOSYNTHESIS began centuries ago with this simple question: When a tiny seed grows into a huge plant, where does all the

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SET IT TO THE SIDE!

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  1. SET IT TO THE SIDE!

  2. Photosynthesis • compare the reactants and products of photosynthesis and cellular respiration in terms of energy and matter;

  3. Research into PHOTOSYNTHESIS began centuries ago with this simple question: When a tiny seed grows into a huge plant, where does all the “new plant” come from?

  4. ENERGY & LIFE • Autotrophs get energy they need to produce food from the sun (or a light source)

  5. The Big Picture: Presence of light, plants transform CO2 and water into carbohydrates and release oxygen. Equations: (aka: carbs such as glucose, sucrose) Carbondioxide WATER Sugars Oxygen _____________ + ____________ _______________ + ____________ Matter Matter Matter Energy → _____________ + ____________ _______________ + ____________ 6 CO2 6 H2O → C6H12O6 6 O2 _____________ + ____________ _______________ + ____________

  6. WAIT A SECOND!!! • What are the reactants of photosynthesis? • What are the products of photosynthesis? • How many of each are there? Equations: (aka: carbs such as glucose) Carbondioxide WATER Sugars Oxygen _____________ + ____________ _______________ + ____________ Matter Matter Matter Energy → _____________ + ____________ _______________ + ____________ 6 CO2 6 H2O → C6H12O6 6 O2 _____________ + ____________ _______________ + ____________

  7. What’s missing?

  8. PHOTOSYNTHESIS: Ok, Where does it happen? LIGHT ENERGY 6CO2 + 6H2O SUGAR + 6O2

  9. http://www.russianflora.com/store/images/product/custom_green_plant_35.jpghttp://www.russianflora.com/store/images/product/custom_green_plant_35.jpg Plants are green because of the pigment Chlorophyll.(which absorbs light energy) What is CHLOROPHYLL? main energy absorbing molecule in green plants What are CAROTENOIDS? Pigments. (These look yellow, orange, and brown) http://www.rnzih.org.nz/images/gardenimages/carrots_d.jpg

  10. What can be found in chloroplast? Enzymes for PHOTO-SYNTHESIS

  11. Pearson Education Inc, Pusblishing as Pearson Prentice Hall Because light is a form of energy, any molecule that absorbs light also absorbs the energy from the light.

  12. ENERGY & ELECTRONS http://www.mhhe.com/biosci/pae/botany/uno/graphics/uno01pob/vrl/images/0160.gif When chlorophyll absorbs light, the energy is transferred to electrons in the chlorophyll molecule. What makes photosynthesis work? HIGH ENERGY ____________ ELECTRONS http://www.wjcc.k12.va.us/ROBB/Atom%20Animation%20Resources_files/image003.gif

  13. Chloroplast Structures & Function: • Locate the … • Thylakoids • Granum • Stroma • 2 stages of photosynthesis: • Light-dependent reactions • Calvin Cycle (Light-independent)

  14. Light Dependent Reactions • Occurs in the thylakoidmembranes (stacked, wafer-like structures in chloroplasts with huge surface area) • Light energy absorbed by chlorophyll used to split H2O molecules • Producing oxygen gas and • Recharging electron carriers. ADP converted to ATP

  15. Calvin Cycle • 5. Occurs in the stroma (space inside the chloroplast) • CO2 enters from atmosphere • Energy from ATP & electron carriers used to convert a 3-carbon molecule to higher energy molecule • Produces a single 6-carbon sugar molecule (glucose)

  16. Basic Process of Photosynthesis: H2O CO2 Sun LIGHT Light Dependent Reactions Calvin Cycle CHRLORPLAST O2 Sugars

  17. THE BIG PICTURE PHOTOSYNTHESIS releases the oxygen we breathe and the carbohydrates heterotrophs (like us) consume to survive Carbondioxide Sugars WATER Oxygen _____________ + ____________ _______________ + ____________ Matter Matter Matter Energy _____________ + ____________ _______________ + ____________

  18. Ticket out the door10 minFill out the photosynthesis diagram. Try it without your notes first!

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