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NEET2003ChemistryBiomoleculesActual

Vitamin B₁₂ contains:

Options

  1. AFe (II)
  2. BCo (III)
  3. CZn (III)
  4. DCa (II)

Correct answer

B. Co (III)

Step-by-step solution

Vitamin B₁₂ is also referred to as cobalamin, because it contains a metal ion Cobalt [Co (III)]. Related Theory The most common cause of vitamin B₁₂ deficiency is a lack of asubstance called intrinsic factor due to which immune system mistakenly attacks the stomach cells that produce this substance and cause pernicious anaemia

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