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RAJASTHAN PMT Rajasthan - PMT Solved Paper-2009

  • question_answer
    In \[{{C}_{3}}\] plants, the first stable product of photosynthesis during dark reaction is

    A)  PGAL                                   

    B)  RuBP

    C)  PGA                     

    D)         OAA

    Correct Answer: C

    Solution :

    The \[{{C}_{3}}\] cycle begins with RuBP (5C). Enzymes combine six RuBP molecules with CO2 from the atmosphere to form six molecules of an extremely unstable six carbon compound. This compound spontaneously reacts with water to form twelve moles of three carbon compound of phosphoglyceric acid (PGA), ie, the first stable compound.


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