Statement I: Radioisotopes were used by Melvin Calvin to identify the first stable product of $\math

Question

Statement I: Radioisotopes were used by Melvin Calvin to identify the first stable product of $\mathrm{CO}_{2}$ fixation process.\ Statement II: ${ }^{14} \mathrm{C}$ and ${ }^{12} \mathrm{C}$ both radioactive forms were used in algal photosynthesis experiment during $\mathrm{CO}_{2}$ fixation.\

Professor PC Thomas Classes · Answer

(b) : By employing ${ }^{14} \mathrm{C}$ labelled carbon dioxide in algal photosynthetic experiments, Calvin and his co-workers were able to formulate the complete metabolic path of carbon assimilation in the form of cycle which is called Calvin cycle. ${ }^{12} \mathrm{C}$ is a stable form of carbon so it does not included under radioactive forms of carbon.