Question

In NADP\(^+\)-malic enzyme type C\(_4\) photosynthesis cycle, \(n\) molecule(s) of ATP is/are required for the assimilation of one molecule of CO\(_2\). The value of \(n\) is ________ (in integer).

Hint:

In C\(_4\) photosynthesis, the NADP\(^+\)-malic enzyme cycle requires 5 molecules of ATP for the assimilation of each molecule of CO\(_2\).

Answer 1

Correct Answer: 5

In the NADP\(^+\)-malic enzyme type C\(_4\) photosynthesis cycle, the assimilation of one molecule of CO\(_2\) requires 5 molecules of ATP. This is because the cycle involves the carboxylation of phosphoenolpyruvate (PEP) and subsequent steps leading to the formation of malate, which is then decarboxylated to release CO\(_2\) for the Calvin cycle. Each turn of this cycle consumes ATP to regenerate PEP and support the carboxylation process. Thus, the value of \(n\) is \( \boxed{5} \).