Question

If the carbon atom of the incoming CO2 molecule is labeled with a radioactive isotope of carbon, where will the radioactivity be measurable after one cycle?

Answer 1

The calvin cycle is called the C3 cycle because the 3-carbon molecule is the first stable product of photosynthesis

Explanation:

The Calvin cycle reactions can be divided into  3 main stages namely the

1. carbon fixation
2. carbon reduction
3. carbon regeneration

if the carbon atom of the incoming CO2 molecule is labeled with a radioactive isotope of carbon,the radioactivity will be measurable at the 3rd stage ,the regeneration of CO2 acceptor(RuBP)