College

Which compound is produced during carbon fixation?

A. PGA
B. G3P
C. RuBP
D. C6H12O6

Answer :

Final answer:

The main compound produced during carbon fixation is 3-phosphoglycerate (3-PGA), which is formed from the reaction of carbon dioxide with ribulose bisphosphate. This process is catalyzed by the enzyme RuBisCO. Additionally, glyceraldehyde-3-phosphate (G3P) is produced from 3-PGA and can contribute to glucose synthesis.


Explanation:

Understanding Carbon Fixation

During the process of photosynthesis, carbon fixation is a crucial step in which carbon dioxide (CO2) is converted into organic compounds. The main compound produced during this process is 3-phosphoglycerate (3-PGA), which is then used to form glucose and other carbohydrates. Furthermore, the enzyme ribulose bisphosphate carboxylase/oxygenase (RuBisCO) catalyzes the reaction that incorporates CO2 into ribulose bisphosphate (RuBP), leading to the production of 3-PGA. Another significant product that arises from the subsequent processing of 3-PGA is glyceraldehyde-3-phosphate (G3P), a three-carbon sugar that can eventually lead to the formation of glucose (C6H12O6).


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