Which of the following is the primary CO2 acceptor molecule in the C3 pathway (Calvin Cycle)?
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Correct answer: Ribulose-1,5-bisphosphate (RuBP)
In the C3 pathway, the primary acceptor of carbon dioxide is a 5-carbon ketose sugar called Ribulose-1,5-bisphosphate (RuBP). This reaction is catalyzed by the enzyme RuBisCO.
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More Dark Reactions: Calvin Cycle and C3 Pathway questions
- The first stable product of the Calvin cycle in C3 plants is a:
- The Calvin cycle proceeds in three distinct stages. What is the correct chronological order of these stages?
- How many molecules of ATP and NADPH are required for every molecule of CO2 fixed during the reduction step of the Calvin cycle?
- To produce one molecule of glucose, how many 'turns' of the Calvin cycle are required?
- Regeneration of one molecule of RuBP requires the expenditure of how many ATP molecules?
- Which enzyme is the most abundant protein on Earth and catalyzes the carboxylation of RuBP?