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).

Carbon dioxide is fixed during carbon fixation, changing from an inorganic to an organic molecule.

The second phase of the Calvin cycle, known as the reduction phase, starts when carbon dioxide and RUBP react. This reaction is catalyzed by the enzyme rubisco and results in a short-lived molecule that spontaneously breaks down into two 3-phosphoglycerate molecules.

In general, carbon fixation turns an inorganic stable molecule into an unstable one rather than causing it to spontaneously split into two organic molecules.

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Answer 2

Julian Aguilar

During the Calvin cycle, the second stage of photosynthesis, atmospheric carbon dioxide is incorporated into stable organic molecules: sugars. This process, known as carbon fixation, is what turns carbon dioxide from the atmosphere into organic compounds.

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Answer from HIX Tutor

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