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11.3 light-independent reactions

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Total cards: 6•Content version: v4•Public deck•Updated: 8/1/2026

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#1
Front (Question)

what cycle describes the light-independent reaction?

Back (Answer)

the calvin cycle

#2
Front (Question)

what does the light-independent reaction depend on?

Back (Answer)

• reduced NADP • ATP (also comes from respiration)

#3
Front (Question)

how does the calvin cycle work? (4)

Back (Answer)

1) CO2 reacts with RuBP (catalysed by rubisco) forms 2* GP 2) reduced NADP reduces GP -> triose phospate (TP) using energy from ATP 3) 1TP used to generate organic molecules: glucose, amino acids 4) 5TP used to regenerate RuBP

#4
Front (Question)

what is the compensation point of photosynthesis?

Back (Answer)

level of light intensity at which rate of O2 produced = rate of O2 utilisation

#5
Front (Question)

where is the site of light-independent reaction?

Back (Answer)

stroma

#6
Front (Question)

what are the adaptations of light-independent reactions?

Back (Answer)

• enzymes needed are in stromal fluid • membrane-bound: chemical environment is seperated from cytoplasm • grana is surrounded by stroma - products of light-dependent reactions diffuse readily • dna & ribosomes in stroma can readily manufacture proteins needed for reactions