NEET2026Botany-Photosynthesis
NEET 2026 Botany Calvin Cycle MCQ Question
Type: MCQ-numerical-Medium-Class 11
How many ATP and NADPH molecules are required to make one molecule of glucose through the Calvin pathway?
A
18 ATP and 12 NADPH
B
12 ATP and 18 NADPH
C
24 ATP and 18 NADPH
D
6 ATP and 12 NADPH
Correct Answer
Option A
Detailed Explanation
Each turn of the Calvin pathway utilizes 3 ATP and NADPH⁺H⁺ molecules for fixation of 1 CO₂ molecule. For 1 glucose, 6 turns are required, hence 18 ATP and 12 NADPH⁺H⁺ are required for glucose synthesis.
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