In the first phase of the C_4 pathway: | vedclass

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Question

(A) In the $C_4$ pathway,the primary $CO_2$ acceptor is a $3$-carbon molecule called Phosphoenolpyruvate $(PEP)$.This reaction occurs in the mesophyll

Vedclass · Accepted Answer

$CO_2$ binds with $PEP$.

Vedclass · Answer

(A) In the $C_4$ pathway,the primary $CO_2$ acceptor is a $3$-carbon molecule called Phosphoenolpyruvate $(PEP)$.This reaction occurs in the mesophyll cells.The enzyme $PEP$ carboxylase $(PEPCase)$ catalyzes the fixation of atmospheric $CO_2$ into $PEP$ to form a $4$-carbon compound,Oxaloacetic acid $(OAA)$.Therefore,the first step involves the binding of $CO_2$ with $PEP$.

In the first phase of the $C_4$ pathway:

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