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Question

Formation of ATP in photosynthesis and respiration is an oxidation process which utilises the energy from

A
Cytochromes
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B
Ferredoxin
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C
Electrons
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D
Carbon dioxide.
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Solution

The correct option is B Electrons
In the electron transport pathway, the reaction centre oxidized after losing an electron, the expelled electron passes through a series of carriers including FeS, ferredoxin, PQ, Cyt b-f complex and PC. While passing between Ferredoxin and PQ over the cytochrome complex, the electron loses sufficient energy to form ATP from ADP and inorganic phosphate. The movement of electrons also occurs in the Electron Transport Chain during the aerobic respiration. It generates the energy which is utilised for the synthesis of ATP.
Hence, the correct answer is 'Electrons'.


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