ch369_sp11_photo_2_notes

ch369_sp11_photo_2_notes - Photosynthesis - Chapter 15 (or...

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Photosynthesis uses the energy of sunlight to convert CO 2 into carbohydrates and other organic molecules that are useful to plants. Plant cells with chloroplasts. Chloroplasts - where photosynthesis occurs. chloroplast Photosynthesis - Chapter 15 (or 13)
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Photosynthesis includes “ light reactions dark reactions ”. Light reactions: Using the energy from sunlight to produce ATP and NADPH .
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Photosynthesis wiki Light reactions.
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Summary of "light reactions" Photosystem II and cytochrome b6f use energy from light to generate a pH difference between the stroma and lumen. O 2 is a waste product, when electrons are removed from H 2 O. ATP synthase uses energy from proton flow to make ATP. Photosystem I uses light energy to reduce NADP + to NADPH (which is useful in dark reactions).
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This is called the "Z-scheme" of photosynthesis. It’s a diagram that summarizes the electron flow. High energy electrons Low energy electrons (Volts) o
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Next, the “ dark reactions ”. Dark reactions = Using the energy stored in ATP and NADPH to convert CO 2 into useful stuff like sugars and other organic molecules needed for growing plants.
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The dark reactions occur in the chloroplast stroma.
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ribulose bisphosphate carboxylase/oxygenase (or Rubisco ) catalyzes CO 2 fixation into carbohydrates. Rubisco adds CO 2 to a 5-carbon sugar and cleaves the product into two 3-carbon units. This is part of the “
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ch369_sp11_photo_2_notes - Photosynthesis - Chapter 15 (or...

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