Botany-C4 Pathway
NEET Botany C4 Pathway MCQ Question
Type: MCQ-numerical-Hard-Class 11
In the C4 pathway, if the primary CO2 acceptor phosphoenol pyruvate (PEP) accepts 100 molecules of CO2, how many 3-carbon molecules are regenerated in the mesophyll cells after the C4 acids are broken down in the bundle sheath cells?
A
100 molecules
B
200 molecules
C
50 molecules
D
300 molecules
Correct Answer
Option A
Detailed Explanation
Each molecule of CO2 accepted by PEP in the mesophyll cells leads to the formation of one C4 acid, which upon breakdown in the bundle sheath cells releases one 3-carbon molecule. Therefore, 100 CO2 molecules result in 100 3-carbon molecules being regenerated.
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