The first stable compound of the dark reactio | vedclass

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(A) In the Calvin cycle (dark reaction),the primary carboxylation step involves the fixation of $CO_2$ into a $5$-carbon compound called Ribulose $1,5

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Phosphoglyceric acid

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(A) In the Calvin cycle (dark reaction),the primary carboxylation step involves the fixation of $CO_2$ into a $5$-carbon compound called Ribulose $1,5$-bisphosphate $(RuBP)$.This reaction is catalyzed by the enzyme $RuBisCO$.The resulting product is an unstable $6$-carbon intermediate,which immediately breaks down into two molecules of $3$-phosphoglyceric acid ($3$-$PGA$).Since $3$-$PGA$ is the first stable compound formed in this process,it is considered the first stable product of the dark reaction.

The first stable compound of the dark reaction of photosynthesis is

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