Light Reactions of Photosynthesis · NCERT Biology

Where is the Oxygen Evolving Complex (OEC) physically located in the chloroplast?

  1. Outer chloroplast membrane
  2. Thylakoid stroma lamellae
  3. Inner thylakoid membrane face
  4. Chloroplast intermembrane space
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Correct answer: Inner thylakoid membrane face

The Oxygen Evolving Complex is located on the inner (lumenal) side of the thylakoid membrane. This positioning ensures that the protons released during water photolysis contribute to the proton gradient within the lumen.

Difficulty: Medium Question 4 of 20

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