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Give the schematic representation of non-cyclic photophosphorylation occur in the chloroplast during light reactions of photosynthesis.
Carries 3 marks
Class 11 CBSE
Answers
Explanation:
light absorbed by LHC 1
excitation of chlorophyll a
electron caught by electron acceptor pheophytin
chla oxidized
splitting of water by water harvesting system
released electrons caught by chla
chla deexcited
electrons from electron acceptor to electron transport system by plastoquinine cycle
for each electron 2H+ from stroma to lumen
again LHC2 takes light
chla of LHC 2 excited
chla of LHC2 is oxidized
it is deoxidised by electrons from electron transport system
electrons released from LHC2 is taken by electron acceptor
those electrons are again taken by FDR enzyme which takes electrons and 2H+ from strom to convert NADP+ to NADPH+
due to this process H+accumulated in lumen
the accumulated H+ will pass through ATPase enzyme which causes rotational change in f1 of atpase enzyme and converts ADP+P to ATP