Radioactive C^{14} is incorporated into CO_2 | vedclass

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(D) In $C_3$ plants,the first step of the Calvin cycle is the carboxylation of $RuBP$ (Ribulose$-1,5-$bisphosphate).During this process,$CO_2$ is fixe

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$PGA$

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(D) In $C_3$ plants,the first step of the Calvin cycle is the carboxylation of $RuBP$ (Ribulose$-1,5-$bisphosphate).During this process,$CO_2$ is fixed by the enzyme $RuBisCO$ to form a $6$-carbon unstable intermediate.This unstable intermediate immediately breaks down into two molecules of $3$-phosphoglyceric acid $(PGA)$.Since the radioactive $C^{14}$ is part of the $CO_2$ molecule,it will first appear in the stable $3$-carbon compound,which is $PGA$.

Radioactive $C^{14}$ is incorporated into $CO_2$ and released into the atmosphere. This $CO_2$ is taken up by $RuBP$ in a $C_3$ plant. In which compound is the radioactive $C^{14}$ first detected?

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