Question

question 6
the role of rubisco in photosynthesis is to:
avoid photorespiration
fix carbon dioxide to rubp
capture solar energy
produce nadph
reduce g3p to 3pg

Explanation:

Rubisco (Ribulose - 1,5 - bisphosphate carboxylase/oxygenase) is an enzyme involved in the Calvin cycle of photosynthesis. Its main function is to catalyze the carboxylation of ribulose - 1,5 - bisphosphate (RuBP) with carbon dioxide. This is the first step in carbon fixation, where inorganic carbon (CO₂) is converted into organic carbon compounds.

• Avoiding photorespiration is not the direct role of rubisco. In fact, rubisco can also catalyze the reaction with oxygen (leading to photorespiration), but its primary role is carbon fixation.
• Capturing solar energy is the role of pigments like chlorophyll in the light - dependent reactions.
• Producing NADPH occurs in the light - dependent reactions of photosynthesis (through the electron transport chain).
• The conversion of G3P (glyceraldehyde - 3 - phosphate) to 3PG (3 - phosphoglycerate) is not a reaction catalyzed by rubisco.

Answer:

fix carbon dioxide to RuBP