RISE Science Biology Practice Questions - RISE Science - Biology Exam

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The Calvin cycle takes place in the stroma of chloroplasts. Which enzyme catalyzes the initial carbon fixation step by combining CO2 with a 5-carbon sugar?

Ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO) ATP synthase DNA polymerase III Phosphofructokinase

Correct Answer:

Ribulose-1,5-bisphosphate carboxylase-oxygenase (RuBisCO)

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