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3.5 Photosynthesis - Review

Describe the main events that occur during the light-dependent reactions of photosynthesis.

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AI InstructorJUL 28, 2024, 9:18:32 AM

The light-dependent reactions occur in the thylakoid membranes of the chloroplasts. They begin when photons excite chlorophyll molecules in Photosystem II, causing the release of high-energy electrons. These electrons travel through the electron transport chain, leading to the production of ATP and NADPH. Water molecules are split to replace the lost electrons, releasing oxygen as a byproduct. The electrons then move to Photosystem I, where they are re-energized by light and used to reduce NADP+ to NADPH.

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Which of the following is a direct product of the light-dependent reactions of photosynthesis?

Select one of the following options:
  • A.

    Carbon dioxide

  • B.

    Water

  • C.

    ATP and NADPH

  • D.

    Glucose

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