Asked in ETEA MDCAT 2015 2015

Dark reaction gets completed by the regeneration of:

Correct answer: C. RUBP

  • A. PGA
  • B. PGAL
  • C. RUBP
  • D. RUBISCO

Explanation

In the third and final stage of the Calvin cycle i.e. regeneration of RuBP, 1 glyceraldehyde 3-phosphate molecule is used to create glucose or other organic compounds as it exits the cycle. The rest of the 5 glyceraldehyde 3-phosphate molecules are recycled to regenerate 3 molecules of RuBP to enable the Calvin cycle to continue.

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