Manipal Medical Manipal Medical Solved Paper-2014

  • question_answer
    Radioactive \[{{C}^{14}}\]is given to \[C{{O}_{2}}\]and released to atmosphere. This \[C{{O}_{2}}\]is taken by ribellous diphosphate in a \[{{C}_{3}}\]plant. First radioactive \[{{C}^{14}}\]is seen in which compound?

    A) PGAL                                       

    B) PEP

    C) RMP                                         

    D) PGA

    Correct Answer: D

    Solution :

    \[{{C}^{14}}\]an isotope of carbon, has .been used to draw the path of \[C{{O}_{2}}\]fixation in Kelvin cycle. This labelled \[{{C}^{14}}\]becomes incorporated with \[^{14}C{{O}_{2}}\]which is accepted by RuBP and a 3-C compound phosphoglyceric acid (3 PGA) is formed, PGA is the first stable compound.


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