Which enzyme catalyses the reaction between carbon dioxide and the five-carbon acceptor in the stroma?
AHexokinase
BEnolase
CRuBisCO
DAldolase
Answer & Solution
Correct answer: C. RuBisCO
1. Two components besides carbon dioxide are present in the stroma to start these reactions.
2. One is the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase, shortened to RuBisCO.
3. The other is ribulose bisphosphate, the five-carbon acceptor.
4. RuBisCO catalyses the reaction between carbon dioxide and that acceptor.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 8 "Photosynthesis", section 8.3 Using Light Energy to Make Organic Molecules_
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