High School

Place the following events in the correct order in which they occur in the Calvin cycle, beginning at the top with the carbon fixation step.

A. The enzyme rubisco combines carbon dioxide with RuBP to form a 6-carbon unstable molecule.
B. The 6-carbon molecule splits to form PGA.
C. PGA is converted into PGAL.
D. Some PGAL is converted into glucose and other sugars, and some PGAL is converted back to RuBP.

Answer :

The correct order of events in Calvin cycle is: D, A, C, and Calvin cycle starts with the enzyme Rubisco combines carbon dioxide with RuBP to form a 6-carbon unstable molecule.

What is the Calvin cycle?

The Calvin cycle is the process by which carbon dioxide is fixed in photosynthesis. The Calvin cycle is part of the light-independent reactions of photosynthesis. Following are the events in the correct order in which they occur in the Calvin cycle, beginning at the top with the carbon fixation step:

Step 1: The enzyme rubisco combines carbon dioxide with RuBP to form a 6-carbon unstable molecule.

Step 2: The 6-carbon molecule splits to form PGA.

Step 3: PGA is converted into PGAL.

Step 4: Some PGAL is converted into glucose and other sugars, and some PGAL is converted back to RuBP.

Thus, the correct order of the events in the Calvin cycle is given as: D. The enzyme rubisco combines carbon dioxide with RuBP to form a 6-carbon unstable molecule, A. The 6-carbon molecule splits to form PGA, C. PGA is converted into PGAL, and B. Some PGAL is converted into glucose and other sugars, and some PGAL is converted back to RuBP.

Learn more about Calvin cycle here:

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