Which molecule would you need to radioactively label in order to produce radioactive oxygen during photosynthesis?
A) carbon dioxide
B) water
C) cytochrome
D) glucose
E) G3P

Question

Quizplus · Accepted Answer

During photosynthesis, oxygen gas is produced as a byproduct when water molecules are split. Therefore, in order to produce radioactive oxygen during photosynthesis, we need to label the water molecule with a radioactive isotope such as 18O. The other molecules listed (carbon dioxide, cytochrome, glucose, and G3P) are not involved in the production of oxygen during photosynthesis.

Which Molecule Would You Need to Radioactively Label in Order