Answer :
Final answer:
The correct sequence of events in the Calvin cycle starting from the addition of CO2 is: a) Rubisco combines with RuBP to form 3PGA; b) ATP and NADPH form G3P; c) G3P regenerates RuBP; d) G3P produces glucose.
Explanation:
The steps in the Calvin cycle of photosynthesis following the addition of a carbon dioxide molecule are in this order:
Rubisco catalyzes a reaction between CO₂ and RuBP, resulting in the formation of 3-PGA (Glycerate 3-phosphate).
ATP and NADPH are utilized to convert 3-PGA into G3P (Glyceraldehyde 3-phosphate).
Most of the G3P molecules are used to regenerate RuBP, which allows the cycle to continue.
A smaller portion of the G3P molecules is used to produce glucose and other carbohydrates.
Thus, the correct order of events, starting with the addition of a carbon dioxide molecule, is: a) Rubisco combines with RuBP to form 3PGA, b) ATP and NADPH are used to form G3P, c) G3P is used to regenerate RuBP, and finally, d) G3P is used to produce glucose.