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Photosynthesis in Higher Plants question

2016 · Q11
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Photosynthesis in Higher Plants question

2016 · Q11

NEETBiologyPhotosynthesis in Higher PlantsMCQ+4 / −1
In a chloroplast the highest number of protons are found in
  1. A
    intermembrane space
  2. B
    antennae complex
  3. C
    stroma
  4. D
    lumen of thylakoids.
View written solutionFree

Correct answer: D

Proton concentration is higher in the lumen of thylakoid due to photolysis of water, H+ pumping and NADP reductase activity in stroma. During the light-dependent reaction, protons are pumped across the thylakoid membrane into the lumen making it acidic down to pH 4.

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