AMU Medical AMU Solved Paper-2004

  • question_answer
    The trapping centre of light energy I photosystem- I is

    A)                 \[{{P}_{660}}\]                                 

    B)                  \[{{P}_{700}}\]

    C)                 \[{{P}_{680}}\]                                 

    D)                  \[{{P}_{630}}\]

    Correct Answer: B

    Solution :

                     Photosystems are of two types?PS-I and PS II. Photosystem-I is present in stroma thylakoids and non-appressed parts of granal thylakoids. Its photocenter is \[{{P}_{700}}\]. It can perform cyclic photophosphorylation independently and alongwith PS-II it transfers electrons to \[NAD{{P}^{+}}\]. PS-II is present in appressed part of granal thylakoids. Its photocenter is \[{{P}_{680}}\].  It picks up electrons emitted during photolysis of water and performs noncyclic photophosphorylation.


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