Vitamin B 12 deficiency causes pernicious anaemia. Animals cannot synthesise vit

MCQ Practice

Vitamin B 12 deficiency causes pernicious anaemia. Animals cannot synthesise vitamin B 12 . Humans must obtain all their vitamin B 12 from their diet. The complexing metal ion in Vitamin B 12 is.

Subject: ChemistryTopic: Biomolecules And Polymers

Mg 2+ (Magnesium ion)

Fe 2+ (Iron ion)

CO 3+ (Cobalt ion)

Zn 2+ (Zinc ion)

Correct Answer: C