Electrons excited by absorption of light in photosystem II are transferred to plastoquinone, and therefore must be replaced. The replacement electrons come from _____.

+2 votes

 

  

water

  

oxygen

  

photosystem I

  

cytochrome

 

asked Dec 25, 2012 in Biology by anonymous
    

1 Answer

+2 votes

 

water

 

answered Dec 25, 2012 by LeafHy ~Expert~ (895 points)

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