KVPY Sample Paper KVPY Stream-SX Model Paper-14

  • question_answer
    During the light phase of photosynthesis, the Photo activated pigments remove an electron from the water molecule. The fate of the free hydroxyl radical is that it

    A) Is broken down into oxygen and a free radical of hydrogen.

    B) Is used to raise the activation level of chlorophyll by donating a positive charge.

    C) Is used to produce adenosine triphosphate from adenosine diphosphate.

    D) Reduces carbon dioxide to sugar.

    Correct Answer: A

    Solution :

    The water molecule is split as shown in the Equation: \[{{H}_{2}}O\to \tfrac{1}{2}{{O}_{2}}+2{{H}^{+}}2{{e}^{-}}\]forming oxygen and hydrogen radicals.


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