What is the number of carbon atoms in phosphoenolpyruvate?
A
2
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B
3
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C
4
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D
5
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Solution
The correct option is B 3 Phosphoenolpyruvate has 3 carbon atoms. The primary CO2 acceptor in C4 plants is phosphoenolpyruvate, which undergoes carboxylation to form a 4 carbon compound i.e., oxaloacetic acid.