CAIE A-Level Biology A2 13.1.11 Calvin Cycle Three Main Stages Questions

Explain the three main stages of the Calvin cycle using evidence from each question and mark scheme.

Exam points

Explain the three main stages of the Calvin cycle.

[Maximum number: 3]

Rubisco enzymes from cotton and false flax are active at temperatures up to $45^{\circ} \mathrm{C}$ and will denature at $45^{\circ} \mathrm{C}$ .

Explain how the Calvin cycle is affected when rubisco denatures.

any three from:
1 less / no, $\mathrm{CO}_{2}$ fixation / carboxylation of RuBP ;
2 less / no, GP, made into / converted to, TP ;
3 less / no, regeneration of RuBP ;
4 less / no, glucose / hexose, made ;

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CAIE A-Level Biology A2 13.1.11 Calvin Cycle Three Main Stages Questions question 1