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Answer the following question. Explain the significance of Calvin cycle. - Biology

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Question

Answer the following question.

Explain the significance of Calvin cycle.

Answer in Brief

Solution

  1. Carboxylation:
    RuBisCO is the most abundant enzyme in the world. It is responsible for fixing carbon in the form of CO2 into sugar. As a result of Carboxylation, the first stable product of carbon fixation i.e. 3- PGA is synthesized.
  2. Reduction/Glycolytic reversal:
    NADPH2 donates electrons to 1, 3-Bisphoshoglycerate to form 3- phosphoglyceraldehyde molecules. During this process, ADP and NADP are generated which are used in light reaction.
  3. Regeneration of RuBP:
    Some 3-phosphoglyceraldehyde molecules are involved in the production of glucose while others are recycled to regenerate the 5-carbon compound RuBP which used to accept new carbon molecules. Thus, the regeneration of RuBP is required for the Calvin cycle to run continuously.
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Role of Sunlight in Photosynthesis - Light Independent Reactions (Dark Reaction \ Biosynthetic Phase)
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Chapter 12: Photosynthesis - Exercise [Page 150]

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Balbharati Biology [English] 11 Standard Maharashtra State Board
Chapter 12 Photosynthesis
Exercise | Q 2. (E) | Page 150
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