In the Calvin-Benson or C₃ photosynthetic pathway,the enzyme rubisco catalyzes the reaction called

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In the Calvin-Benson or C₃ photosynthetic pathway, the enzyme rubisco catalyzes the carboxylation reaction, which involves the addition of a carbon dioxide molecule to a five-carbon compound. This reaction is essential for the fixation of carbon dioxide during photosynthesis. Option A is incorrect because chemosynthesis refers to the process where organisms use energy from chemical reactions to produce organic compounds. Option C is incorrect since photoreduction involves the addition of electrons to a molecule by light energy. Option D is incorrect because respiration is the process of breaking down organic molecules to produce energy.

In the Calvin-Benson or C₃ Photosynthetic Pathway,the Enzyme Rubisco Catalyzes