AMU Medical AMU Solved Paper-1995

  • question_answer
    The first step in photosynthesis is

    A)  formation of ATP

    B)  ionization of water

    C)  excitation of an electron of chlorophyll

    D)  attachment of\[C{{O}_{2}}\]to carbon sugar.

    Correct Answer: C

    Solution :

    : Chloroplasts, having green pigment chlorophyll is the site for photosynthesis. During. photosynthesis chloroplasts absorb carbon dioxide from the environment and release oxygen in presence of light. When light is absorbed, the pigment becomes excited or unstable. The excited electron gives off a photon, in addition to heat/as it reverts to the ground state.


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