In sugarcane,when 14CO_2 is fixed into malic | vedclass

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(C) Sugarcane is a $C_4$ plant. In $C_4$ plants,the primary fixation of $CO_2$ occurs in the mesophyll cells. The enzyme responsible for this initial

Vedclass · Accepted Answer

Phosphoenolpyruvate carboxylase

Vedclass · Answer

(C) Sugarcane is a $C_4$ plant. In $C_4$ plants,the primary fixation of $CO_2$ occurs in the mesophyll cells. The enzyme responsible for this initial carboxylation is $Phosphoenolpyruvate$ $(PEP)$ carboxylase. This enzyme catalyzes the reaction between $CO_2$ (or $HCO_3^-$) and $PEP$ to form oxaloacetic acid $(OAA)$,which is subsequently converted into malic acid or aspartic acid. Therefore,the correct enzyme is $PEP$ carboxylase.

In sugarcane,when $14CO_2$ is fixed into malic acid,which enzyme is responsible for the fixation of $CO_2$?

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