Question

Where does the Calvin cycle occur and does it need light?

Answer 1

The Calvin cycle occurs in the stroma of chloroplasts in plant cells. It is the set of reactions that takes place during the light-independent phase of photosynthesis. While the Calvin cycle does not directly require light to occur, it relies on the products generated during the light-dependent reactions, which do require light. These products include ATP and NADPH. Thus, while the Calvin cycle itself can occur in the dark, it is indirectly dependent on light because it needs the energy carriers produced during the light reactions.