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Photosynthesis2

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Transcript

  • 1.
    • Based on what you discovered yesterday, why do leaves change colors in Autumn?
  • 2. Photosynthesis
  • 3. What is Photosynthesis?
    • Process by which green plants convert the energy from sunlight or light into chemical energy (glucose).
    • Obtains the energy from white light.
  • 4. Autotrophs vs. Heterotrophs
    • Autotrophs---producers, makes their own food
    • Heterotrophs---consumers, must obtain or eat food
    • Autotrophs go through photosynthesis OR Chemosynthesis
    Autotrophs vs. Heterotrophs
  • 5. Photosynthesis/Respiration Cycle
  • 6. Ingredients of Photosynthesis
    • White Light (Sunlight)
    • Pigments
      • Chlorophyll
      • Accessory Pigments
    • ATP
    • CO2
    • H2O
  • 7. ATP
    • ATP = adenosine triphosphate
    Big Energy Bond – Lots Chemical Energy Released P P P Three phosphate groups Adenine nitrogen group Ribose sugar
  • 8. ADP-ATP Cycle ADP P ATP
  • 9. White Light
    • White Light= ROY G BIV
    • Colors Appear the way they do because the light is REFLECTED
    • WHAT LIGHT IS IMPORTANT IN PHOTOSYNTHESIS?...
  • 10. Types of Pigments
    • Chlorophyll---Green (reflected)
    • Accessory Pigments
      • Carotenoids:
        • Xanthophyll---Yellow
        • Carotene---Orange
  • 11. Why so many colors?
  • 12. Formula for Photosynthesis
    • H 2 O + CO 2 O 2 + C 6 H 12 O 6
  • 13. Where Photosynthesis Takes Place
    • Leaf
    • Mesophyll Cells
    • Organelle responsible for Photosynthesis
      • Chloroplast
        • Contain Plant Pigments That Capture the Sun’s Energy
        • Thylakoid- Light Reactions
        • Stroma- Dark Reactions
  • 14. Where the 2 Reactions of Photosynthesis take place                                   
  • 15. Thylakoids
    • This is where the first phase of Photosynthesis takes place.
    • Which is also know as the light reaction .
    • Involves the trapping of light energy and the formation of materials.
    • Produces Oxygen by breaking down H 2 O into free Electrons, H + and O
    • H+ go to stroma, releasing energy for ATP Production.
  • 16. Stroma
    • This is where the second phase, the Calvin Cycle, of Photosynthesis takes place.
    • Which is also known as the dark reaction .
    • Produces glucose from H + and CO 2 .
    • Uses the products from the light reactions to form glucose.
  • 17. Summary!
    • Green Plants Are Excellent At Capturing the Sun’s Energy
    • They Make A Huge Amount of Glucose With A Little Of Energy From the Sun
    • Hey, They Actually Eat Their Own Glucose Through Aerobic Respiration

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