

MCQOPTIONS
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1. |
In the co-enzyme B12the position occupied by a cyanide ion in vitamin B12 is bonded directly to the __________ of the ribose of adenosine. |
A. | 5-6 dimethylbenzimidazole |
B. | adenine |
C. | cyanocobalamin |
D. | hydroxycobalamin |
Answer» C. cyanocobalamin | |