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From plastoquinine, the high energy electrons carrier/s in non-cyclic transport of light reaction is/are……..
a) plastocyanin           
b) cytochrome f
c) cytochrome b         
d) all of these

d

Some of the energy lost by the electrons between………is used in making ATP from ADP and inorganic phosphate in non-cyclic light reaction.
a) plastoquinine and plastocyanine    
b) plastocyanine and cytochrome b
c) cytochrom b and cytochrome f   
d) cytochrome f and plastoquinine

c

Explanation: this process of ATP formation is called photophosophorylation



The electrons from…….are received by photosystem I (P700).
a) plastocyanin          
b) plastoquinine
c) cytochrome b         
d) ferrodoxin reducing substance (FRS)

a

Explanation: Plastocyanin is a copper-containing protein that mediates electron-transfer



Ferrodoxin is a constituent of ……..
a) PS II                                   
b) PS I
c) both I & II             
d) none of them

b

Which of the following is the electron acceptor in photosystem I (P700)?
a) plastocyanin          
b) plastoquinine
c) cytochrome b         
d) ferrodoxin reducing substance (FRS)

a

The cyclic elctron transport in light reaction of photosynthesis involves……
a) photosystem I       
b) photosystem II
c) both a and b
d) either a or b

a

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