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Photosynthesis in Higher Plants question

2025 · Q9
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Photosynthesis in Higher Plants question

2025 · Q9

NEETBiologyPhotosynthesis in Higher PlantsMCQ+4 / −1

Which of the following statements about RuBisCO is true?

  1. A
    It is an enzyme involved in the photolysis of water
  2. B
    It catalyzes the carboxylation of RuBP
  3. C
    It is active only in the dark
  4. D
    It has higher affinity for oxygen than carbon dioxide
View written solutionFree

Correct answer: B

Carboxylation is the most crucial step of the Calvin cycle where $\mathrm{CO}_2$ is utilised for the carboxylation of RuBP. This reaction is catalysed by enzyme RuBP carboxylase. Since this enzyme also has an oxygenase activity, RuBisCO has higher affinity for carbon dioxide than oxygen.

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