Question

The reaction that is responsible for the primary fixation of $C{O}_2$ is catalysed by

• A. $RuBP$ carboxylase
• B. $PEP$ carboxylase
• C. $RuBP$ carboxylase and $PEP$ carboxylase
• D. $PGA$ synthase

Answer 1

The correct option is A $RuBP$ carboxylase

Carboxylation is the reaction responsible for the primary fixation of carbon dioxide. This reaction is catalysed by the RuBP carboxylase which results in the formation of 2 molecules of 3-PGA.

So, the correct option is 'RuBP carboxylase' .