Practise IB Biology HL 1.3.19 by applying interdependence of light and light-independent reactions concepts to exam questions.
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 3phosphate)
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;