Trace how light-dependent reactions supply ATP and reduced NADP, then explain how the Calvin cycle uses them for GP reduction and RuBP regeneration in IB Biology HL C1.3.19.
Plants have developed efficient methods for transport and for synthesis of foods.
Explain how the light-independent reactions of photosynthesis rely on the light-dependent reactions.
light-dependent reactions produce ATP/reduced NADP;
ATP generated by chemiosmosis/by photophosphorylation/by ATP synthase;
reduced NADP produced by/using electrons from Photosystem I;
RuBP +CO2 to glycerate 3-phosphate (in light independent reactions);
glycerate 3-phosphate reduced to triose phosphate (in light independent reactions);
ATP/reduced NADP used in the light-independent reactions;
reduced NADP provides electrons/hydrogen / to reduce (glycerate 3-phosphate)
OR
reduced NADP used to convert glycerate 3-phosphate to triose phosphate;
ATP provides energy (for reduction of glycerate 3-phosphate);
ATP needed to regenerate RuBP
ATP/reduced NADP run out in darkness
Calvin cycle only possible with light/in the day/is indirectly dependent on light;