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In biochemical phase, fixation of carbon dioxide occurs by

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RuBiSCO
b
PGA
c
OAA
d
PGAL

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detailed solution

Correct option is A

Carboxylation is the fixation of CO2 into a stable organic intermediate. Carboxylation is the most crucial step of the Calvin cycle where CO2 is utilised for the carboxylation of RuBP. This reaction is catalysed by the enzyme RuBP carboxylase which results in the formation of two molecules of 3-PGA.

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