The light-induced changes in chloroplasts which regulate key Calvin cycle enzymes include all EXCEPT: A) activation of rubisco activase. B) Mg²⁺ efflux from the thylakoid lumen. C) changes in stromal pH. D) generation of reducing power. E) all are true.

Question

Quizplus · Accepted Answer

All the options listed (A through D) are indeed light-induced changes in chloroplasts that regulate key Calvin cycle enzymes. Rubisco activase is activated, there are changes in the stromal pH and in ion concentrations (though the specific ions and complexes mentioned in option B are not accurately represented), and the generation of reducing power (NADPH) is a crucial aspect of the light reactions that impacts the Calvin cycle.

The Light-Induced Changes in Chloroplasts Which Regulate Key Calvin Cycle