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Photosynthesis in Detail

Photosynthesis in Detail. Chapter 4.3. First Stage. This stage captures and transfers energy This is the Light-Dependent Reactions Broken into two parts Photosystem I Photosystem II This works in a strange order. II occurs before I does (This is tricky to remember). Photosystem II.

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Photosynthesis in Detail

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  1. Photosynthesis in Detail Chapter 4.3

  2. First Stage • This stage captures and transfers energy • This is the Light-Dependent Reactions • Broken into two parts • Photosystem I • Photosystem II • This works in a strange order. • II occurs before I does (This is tricky to remember)

  3. Photosystem II • Energy Absorbed from Sunlight • Water Molecules Split • Hydrogen Ions Transported

  4. Photosystem I • Energy is absorbed from sunlight • NADPH is produced when electrons are added to NADP+ • Hydrogen Ions diffuse through protein channel. • ADP is changed into ATP when hydrogen ions flow through ATP synthase.

  5. Second Stage • This stage uses energy from the first stage to make sugars. • This is called Light-Independent Reactions. • Also called the Calvin Cycle.

  6. Calvin Cycle • Carbon dioxide added • Three-carbon molecules are formed • Three-carbon molecules exit • Three-carbon molecules recycled

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