Biology

The most likely effect of NaHSO₃ solution is that it promotes the production of [H] in the chloroplasts.

If NaHSO₃ solution promotes the production of [H] (NADPH) in the chloroplasts, more [H] will be available for the reduction of C₃ compounds in the Calvin cycle. With an increased rate of C₃ reduction, the concentration of C₃ compounds will decrease. At the same time, as the reduction of C₃ is enhanced, more glyceraldehyde 3-phosphate is produced, which can be used to regenerate C₅ compounds at a faster rate, leading to an increase in the concentration of C₅ compounds.

The other options are incorrect:

Option B: If it promotes the fixation of CO₂, more CO₂ will combine with C₅ to form C₃ compounds. As a result, the concentration of C₃ compounds should increase rather than decrease, and the concentration of C₅ compounds should decrease due to the consumption of C<...