MCQOPTIONS
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| 1. |
Vitamin B12 deficiency causes pernicious Anemia. Animals cannot synthesize vitamin B12. Humans must obtain all their vitaminB12 from their diet. The complexing metal ion in vitamin B12 is: |
| A. | Mg2+ (Magnesium ion) |
| B. | Fe2+ (Iron ion) |
| C. | Co3+ (Cobalt ion) |
| D. | Zn2+ (Zinc ion) |
| Answer» D. Zn2+ (Zinc ion) | |