Light independent reaction 0.0 / 5 ? BiologyHuman, animal and plant physiologyA2/A-levelAQA Created by: meganbradfield1Created on: 09-06-16 12:55 When does the light independent reaction occur? Can occur without light; but is dependent on the light dependent stage as it requires products 1 of 8 Where does this stage take place? Stroma 2 of 8 How is the chloroplast adapted to carry out this reaction? Fluid of stroma contains all enzymes needed; stroma surrounds grana so products can easily diffuse; contains DNA and ribosomes 3 of 8 First stage of calvin cycle CO2 diffuses into leaf via stomata and dissolves in water around mesophyll cells; then diffuses through chloroplast membranes into stroma 4 of 8 Second stage of calvin cycle CO2 combines with ribulose bisphosphate (RUBP) via rubisco, producing glycerate 3-phosphate (GP) x 2 5 of 8 Third stage of calvin cycle ATP and reduced NADP used to reduce GP to triose phosphate x 2 6 of 8 Fourth stage of calvin cycle NADP reformed and goes back to light dependent reaction 7 of 8 Fifth stage of calvin cycle Some TP converted into glucose, but most are used to regerate RUBP using ATP 8 of 8
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