Light independent reaction

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When does the light independent reaction occur?
Can occur without light; but is dependent on the light dependent stage as it requires products
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Where does this stage take place?
Stroma
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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
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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
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Second stage of calvin cycle
CO2 combines with ribulose bisphosphate (RUBP) via rubisco, producing glycerate 3-phosphate (GP) x 2
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Third stage of calvin cycle
ATP and reduced NADP used to reduce GP to triose phosphate x 2
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Fourth stage of calvin cycle
NADP reformed and goes back to light dependent reaction
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Fifth stage of calvin cycle
Some TP converted into glucose, but most are used to regerate RUBP using ATP
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Card 2

Front

Where does this stage take place?

Back

Stroma

Card 3

Front

How is the chloroplast adapted to carry out this reaction?

Back

Preview of the front of card 3

Card 4

Front

First stage of calvin cycle

Back

Preview of the front of card 4

Card 5

Front

Second stage of calvin cycle

Back

Preview of the front of card 5
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