You want to use radioactively labeled oxygen to trace carbon fixation in a plant. You should incorporate the radioactively labeled oxygen into A) O₂. B) CO₂. C) H₂O. D) C₆H₁₂O₆.

Question

Quizplus · Accepted Answer

Radioactively labeled oxygen should be incorporated into CO2 because during the process of carbon fixation in plants, CO2 is chemically combined with H2O to produce glucose (C6H12O6) and O2. Therefore, by incorporating the radioactively labeled oxygen into CO2, we can trace the movement of carbon dioxide as it is fixed into glucose during the Calvin cycle.

You Want to Use Radioactively Labeled Oxygen to Trace Carbon