Botany-Calvin Cycle
NEET Botany Calvin Cycle MCQ Question
Type: MCQ-numerical-Hard-Class 11
How many molecules of ATP and NADPH are required for the fixation of 18 molecules of CO2 during the Calvin Cycle?
A
54 ATP and 36 NADPH
B
36 ATP and 24 NADPH
C
72 ATP and 48 NADPH
D
18 ATP and 12 NADPH
Correct Answer
Option A
Detailed Explanation
For each CO2 molecule fixed, 3 ATP and 2 NADPH are required. Therefore, for 18 CO2 molecules, 54 ATP (18 x 3) and 36 NADPH (18 x 2) are needed.
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