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

Carbon fixation is the process by which atmospheric carbon dioxide is converted into organic compounds by plants. The oxygen in CO₂ is incorporated into the organic compounds during carbon fixation, so choosing option B - CO₂ - as the source of radioactively labeled oxygen is the best option for tracing carbon fixation in the plant.

You Want to Use Radioactively Labeled Oxygen to Trace Carbon