What is the first stable product of C4 cycle?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The first stable product of the C4 pathway is oxaloacetic acid (OAA), a 4-carbon dicarboxylic acid. It forms when PEP carboxylase (PEPcase) catalyzes CO₂ fixation to phosphoenolpyruvate (PEP) in mesophyll cells.
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