Photosynthesis

AP Biology· difficulty 2/5

The Calvin cycle's first carbon-fixing enzyme is

A
$ATP synthase$
B
$Pyruvate dehydrogenase$
C
$RuBisCO$
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D
$DNA polymerase$

Explanation

Ribulose-1,5-bisphosphate carboxylase/oxygenase fixes CO₂ onto RuBP, producing two 3-PGA molecules.

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