Photosynthesis


  1. Electrons from excited chlorophyll molecule of photosystem II are accepted first by:









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    Electrons from excited chlorophyll molecule of photosystem II are accepted first by quinone. Photosystem II is a photosynthetic pigment system along with some electron carriers that are located in the appressed part of the grana thylakoids. Photosystem II has chlorophyll a, b and carotenoids. Other components of PS II are phaeophytin, plastoquinone (PQ), cytochrome complex and blue coloured copper containing plastocyanin.

    Correct Option: C

    Electrons from excited chlorophyll molecule of photosystem II are accepted first by quinone. Photosystem II is a photosynthetic pigment system along with some electron carriers that are located in the appressed part of the grana thylakoids. Photosystem II has chlorophyll a, b and carotenoids. Other components of PS II are phaeophytin, plastoquinone (PQ), cytochrome complex and blue coloured copper containing plastocyanin.


  1. The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is










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    The first acceptor of electrons from an excited chlorophyll of PSII is quinone.

    Correct Option: C

    The first acceptor of electrons from an excited chlorophyll of PSII is quinone.



  1. Pigment acting as a reaction centre during photosynthesis is









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    P700 consists of a chl a and chl b molecules and is named as such due to maximum absorption by pigment or photocentre at that wavelength.

    Correct Option: C

    P700 consists of a chl a and chl b molecules and is named as such due to maximum absorption by pigment or photocentre at that wavelength.


  1. Which one of the following statements about cytochrome P-450 is wrong?









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    Cytochrome P-450 contains copper.

    Correct Option: A

    Cytochrome P-450 contains copper. Cytochrome P-450 contains copper.



  1. NADPH is generated through









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    NADPH is generated by photosystem I during non-cyclic photophosphorylation.

    Correct Option: A

    NADPH is generated by photosystem I during non-cyclic photophosphorylation.