The correct answer is: (4) all are correct.
Vitamin B12, also known as cobalamin, is a complex molecule that contains a central cobalt atom. It is involved in various essential biochemical processes in the body and plays a crucial role in DNA synthesis, red blood cell formation, and nervous system function.
1. Vitamin B12 is cyanocobalamin complex: Cyanocobalamin is one of the forms of vitamin B12, and it is commonly used in supplements and fortified foods due to its stability. In this form, a cyanide group is attached to the cobalt atom.
2. Vitamin B12 is used as an antipernicious anemia factor: Pernicious anemia is a condition where the body cannot absorb enough vitamin B12 from the gastrointestinal tract. Vitamin B12 supplementation, often in the form of cyanocobalamin, is used to treat and prevent this type of anemia.
3. Vitamin B12 is a cobalt complex in +II oxidation state: The central cobalt atom in vitamin B12 exists in the +II oxidation state, which allows it to act as a cofactor in various enzymatic reactions.
So, all the statements provided in options (1), (2), and (3) are correct, making option (4) the correct answer. Vitamin B12 is a cyanocobalamin complex, used as an antipernicious anemia factor, and contains a cobalt complex in the +II oxidation state. |
