Photosynthesis

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Photosynthesis
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Chloroplasts
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Photosynthesis in nature

• Autotrophsbiotic producers photoautotrophs
  chemoautotrophs obtains organic food without
  eating other organisms
• Heterotrophs biotic consumers
  obtains organic food by eating other organisms or
  their by-products (includes decomposers)

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Warm-Up

• What are the two parts of photosynthesis? (Look
  in your book, pg. 93)
• What are the reactants?
• What are the products?
• How are the products of photosynthesis important
  to us?

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The chloroplast

• Sites of photosynthesis
• Pigment chlorophyll
• Plant cell mesophyll
• Gas exchange stomata
• Double membrane
• Thylakoids, grana, stroma

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Photosynthesis

• A complex process in which visible sunlight is
  converted into chemical energy in carbohydrate
  molecules.
• Occurs within the chloroplasts of cells

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Photosynthesis

• Light Independent Reaction (Dark Reaction)
• Occurs within the Stroma

• Light Reaction
• Occurs within the thylakoid membrane inside of
  the chloroplasts

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An overview of photosynthesis
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The overall equation for photosynthesis is
written as
6CO2 6H20 C6H12O6 6O2 light