Question

Arrange the steps of the Calvin cycle in the correct order.

a) Fixation of CO₂
b) Reduction
c) Regeneration of RuBP
d) Formation of 3-phosphoglycerate

Answer 1

The steps of the Calvin cycle in the correct order are fixation of CO₂, reduction, and regeneration of RuBP.

Step-by-step explanation:

1. Fixation of CO₂: The enzyme RuBisCO incorporates carbon dioxide into ribulose bisphosphate (RuBP) to produce 3-phosphoglycerate (3-PGA).
2. Reduction: ATP and NADPH from the light-dependent reactions are used to convert 3-PGA into glyceraldehyde 3-phosphate (G3P).
3. Regeneration of RuBP: The remaining G3P is used to regenerate RuBP, allowing the cycle to continue.