Biology NEET Full Syllabus Mock Test 180 Questions New Syllabus Mock Test - 11 PCB Single Correct MCQ
Published on: August 12, 2026

Given below are two statements:

Statement I: The reduction step in the Calvin cycle involves the utilisation of 3 molecules of ATP for phosphorylation and 2 molecules of NADPH for reduction per molecule fixed, and consists of a series of reactions that lead to the formation of glucose.
Statement II: Carboxylation is the fixation of into a stable organic intermediate and is the most crucial step of the Calvin cycle, where is utilised for the carboxylation of RuBP.
In the light of the above statements, choose the most appropriate answer from the options given below:

A
Statement I and statement II both are correct.
B
Statement. I is correct but statement II is incorrect.
C
Statement I is incorrect but statement II is correct.
D
Statement I and statement II both are incorrect.

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The correct answer is:
C

Reduction - These are a series of reactions that lead to the formation of glucose. The steps involve utilisation of 2 molecules of ATP for phosphorylation and two of NADPH for reduction per molecule fixed.

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