Question

What is carbon fixation, and how does it relate to photosynthesis?

Answer 1

Carbon fixation is the first step out of three in the Calvin Cycle (the light-independent reactions).

Explanation:

In carbon fixation, carbon dioxide is fixed from being an inorganic molecule to an organic molecule.

Firstly Carbon dioxide reacts with RUBP this reaction is catalyzed by the enzyme rubisco this produces a short-lived molecule that spontaneously breaks down into two 3-phosphoglycerate molecules. Then the second phase to the Calvin cycle occurs. The reduction phase

Overall carbon fixation occurs to make a stable inorganic molecule become an unstable molecule than to spontaneously break down into 2 organic molecules.

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-AN