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JAMB Biology 2025 Objective — Question 33

Question 33 of 40 from the Joint Admissions and Matriculation Board (JAMB) Biology 2025 Objective paper, with the correct answer and a full explanation.

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During photosynthesis, the Calvin cycle is responsible for

  • A. Splitting water molecules
  • B. Converting carbon dioxide into glucoseCorrect
  • C. Producing oxygen
  • D. Synthesizing ATP

Explanation

The Calvin cycle, also known as the light-independent reactions, is a key part of photosynthesis where carbon dioxide is converted into glucose. This cycle occurs in the stroma of chloroplasts and involves three main stages: carbon fixation, reduction and regeneration of RuBP.

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