AMU Medical AMU Solved Paper-1995

  • question_answer
    The first stable compound in Hatch Slack pathway is

    A)  phosphoglyceric acid

    B)  lactic acid

    C)  oxalo acetic acid

    D)  none of the above.

    Correct Answer: C

    Solution :

    : Hatch-Slack pathway (\[{{C}_{4}}\]pathway) is a process of\[C{{O}_{2}}\]fixation which occurs mostly in monocot plants (Artiplex, Cyprus, sugarcane, maize) and in some dicots (Amaranthus) in which the\[C{{O}_{2}}\]is fixed by phosphoenol pyrurate (PEP) and the first stable 4 carbon compound, oxaloacetic acid is produced. In the plants in which\[C{{O}_{2}}\]fixation takes place by Calvin cycle (\[{{C}_{3}}\]cycle), the first product of\[C{{O}_{2}}\] fixation is a 3 carbon compound, phosphoglyceric acid.


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