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NEET 2026

Exam: NEET
Year: 2026
Subject: Botany
Chapter: Photosynthesis in Higher Plants

NEET 2026 · Botany · Photosynthesis in Higher Plants

How many ATP and NADPH molecules are required to make one molecule...

How many ATP and NADPH molecules are required to make one molecule of glucose through the Calvin pathway ?

Options

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

A. $18$ ATP and $12$ NADPH

Step-by-step solution

In the Calvin cycle, the fixation of one molecule of

CO_2

requires

3

ATP and

2

NADPH molecules.

To synthesize one molecule of glucose,

6

molecules of

CO_2

must be fixed.

Total ATP required =

6 \times 3 = 18

ATP.

Total NADPH required =

6 \times 2 = 12

NADPH.

Answer:

18

ATP and

12

NADPH

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