J & K CET Medical J & K - CET Medical Solved Paper-2008

  • question_answer
    The first compound that accepts \[C{{O}_{2}}\] during dark phase is

    A)  NADP                                  

    B)  ferredoxin

    C)  RuBP                                   

    D)  cytochrome

    Correct Answer: C

    Solution :

                    The \[{{C}_{3}}-\]cycle (a type of dark phase of photosynthesis) begins with RuBP, a five carbon sugar. Enzymes combine six RuBP molecules with \[C{{O}_{2}}\]from the atmosphere to form six molecules of an extremely unstable six carbon compound. This compound spontaneously reacts with water to form twelve three-carbon molecules of phosphoglyceric acid (PGA), whose 3-carbons give the \[{{C}_{3}}\]cycle its name.


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