It Is Believed That the Ratio of Cyclic Photophosphorylation to Z-Scheme

question 24

Multiple Choice

It is believed that the ratio of cyclic photophosphorylation to Z-scheme photosynthesis changes in response to metabolic demands.How would this ratio in chloroplasts performing the following reaction compare to that in chloroplasts performing only the Calvin cycle?
Calvin cycle + reduction of nitrite (NO₂^-) to NH₃

• A)The ratio of cyclic photophosphotylation to Z-scheme is increased in chloroplasts performing the above reaction compared to those performing only the Calvin cycle
• B)The ratio of cyclic photophosphotylation to Z-scheme is decreased in chloroplasts performing the above reaction compared to those performing only the Calvin cycle
• C)The ratio of cyclic photophosphotylation to Z-scheme is depends primarily on the level of light available and would therefore not be altered by the above reaction
• D)The ratio of cyclic photophosphotylation to Z-scheme is depends primarily on the availability of plastocyanin and would therefore not be altered by the above reaction
• E)none of the above