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Question

Does photorespiration regenerate any RuBP at all?


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Solution

Photorespiration:

  1. In contrast to the typical pattern of photosynthesis, many higher plants have a respiratory activity called photorespiration where they absorb oxygen from the light and release some carbon dioxide.
  2. The number of RuBP acceptors that can regenerate during photorespiration is limited to 5.
  3. As phosphoglycerate is formed during oxygenation and is catalyzed by the enzyme RuBisCO, it is known as photorespiration.

Final Answer: At whatever carbon dioxide level, photorespiration regenerates RuBP.


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