Radioactive C^{14} is given to carbon dioxide | vedclass

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(D) $C^{14}$ is a radioactive isotope of carbon. It is used to trace the path of carbon fixation during the process of photosynthesis.When $^{14}CO_{2

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$PGA$

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(D) $C^{14}$ is a radioactive isotope of carbon. It is used to trace the path of carbon fixation during the process of photosynthesis.When $^{14}CO_{2}$ is taken up by the plant,it reacts with $RuBP$ (Ribulose$-1,5-$bisphosphate) in the presence of the enzyme $RuBisCO$.This reaction results in the formation of two molecules of $3$-phosphoglyceric acid $(3-PGA)$,which is a $3$-carbon compound.Since $3-PGA$ is the first stable product formed during the Calvin cycle,the radioactive $C^{14}$ is first detected in $PGA$.

Radioactive $C^{14}$ is given to carbon dioxide and released into the atmosphere. This carbon dioxide is taken up by $RuBP$ in a $C_{3}$ plant. In which compound is the radioactive $C^{14}$ first observed?

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