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PD 2 Photosynthesis Notes
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PD 2 Photosynthesis Notes

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Here are your notes for the chapter. Please write them into your notebook.

Here are your notes for the chapter. Please write them into your notebook.

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    PD 2 Photosynthesis Notes PD 2 Photosynthesis Notes Presentation Transcript

    • Photosynthesis Chapter 8
    • Energy and Life
      • Living organisms need energy to survive.
      • Where does the energy they need come from?
      • A: Photosynthesis or Chemosynthesis
      • These organisms are called producers.
    • Energy and Life
      • Producers are organisms that make their own food.
      • Examples: Green plants and cyanobacteria (blue-green algae)
      • Producers are also called autotrophs.
    • Energy and Life
      • Photosynthesis is the process by which cells use light energy to make organic compounds from inorganic materials.
      • What do you think chemosynthesis is? What organisms might use it?
    • Energy and Life
      • Photosynthetic producers use <3% of the sun’s energy.
      • The energy harvested for photosynthesis is the energy needed for survival of all other organisms on our planet.
      • How do these other organisms obtain energy?
      • A:
    • Energy and Life
      • Consumers are organisms that get their food from others.
      • Consumers = Heterotrophs
      • What is the ultimate source of energy for living things?
      • A:
    • Energy and Life
    • Electromagnetic Spectrum
      • Reading “Origin of Photosynthetic Organisms”
      • Gamma Rays= High E and Short λ
      • Radio/radar/tv =Low E and Long λ
      • * λ = wavelength
      • Photon -smallest unit of light
    • Lights and Pigments
      • Plants absorb the sun’s energy with light absorbing molecules called pigments .
      • There are several types of pigments:
        • Chlorophyll a and b, carotenes, xanthophylls, carotenoids
    • Typical Leaf Structure
    • Function of Stomata
      • Transpiration is the loss of water by plants to the atmosphere
      • Stomata open = water and gas exchange
      • How do they open and close?
    • Chloroplast Structure
    • Photosynthesis: Overview
      • Types of Organims?
      • Source of Energy?
      • Structure: Leaf and Chloroplasts
      • Electromagnetic Spectrum and Pigments
      • Photosynthetic Investigations:
      • -Jan van Helmont-Hydrate
      • -Joseph Priestly-Carbon
      • -Jan Ingenhousz-Light
    • Photosynthesis Overview
    • Photosynthesis Overview
    • Terminology
      • Types of Reactions:
      • -Light-Dependent
      • -Light-Independent/Calvin Cycle/ Carbon-fixation Cycle/ C3 cycle
      • NADP + and NADPH
      • Electron Transport Chain (ETS)
    • Light-Dependent Reactions
    • Light-Dependent Reactions
    • Chemiosmosis
    • Light-Dependent Reactions Summary
      • Input: 2 Water Molecules
      • Light Energy
      • Output: 2 NADPH
      • ATP
      • Oxygen Gas
      • Why is ATP and NADPH not enough?
    • Calvin Cycle
    • Light-Independent Reactions Summary
      • Input: 1 Turn of Cycle
      • - 3 carbon dioxide molecules
      • - 9 ATP
      • - 6 NADPH
      • Output: 1 Turn of Cycle
      • - 1 3-carbon G3P (PGAL) Molecule
      • 2 Turns of the cycle needed for carbohydrate synthesis. Reading Worksheet: “Fate of PGAL”
    • Rate of Photosynthesis and View of Other Pathways
      • BSCS Text: pages 170-177