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    • Question

      The vitamin B deficiency will lead to the accumulation

      of which of the following metabolites?
      A Pyruvic acid Correct Answer Incorrect Answer
      B Methyl malonic acid Correct Answer Incorrect Answer
      C α‐Keto glutarate Correct Answer Incorrect Answer
      D Biotin Correct Answer Incorrect Answer

      Solution

      Vitamin B12 (cobalamin) is essential for the conversion of methylmalonyl-CoA to succinyl-CoA. In vitamin B12 deficiency, this conversion is impaired, leading to the accumulation of methylmalonic acid. Therefore, elevated levels of methylmalonic acid are indicative of vitamin B12 deficiency.

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