Question

Cobalt containing vitamin is
A) Vitamin $B_7$
B) Vitamin $B_6$
C) Vitamin $B_12$
D) Folic acid

Answer 1

Hint:Vitamins can be defined as organic molecules which are essential micronutrients and can be taken in form of edibles only. They are required in small quantities for proper functioning of the body.

Complete answer:
Cobalt is found at the centre of vitamin $B_12$ and a range of other co-enzymes called cobalamins. It is also referred to as cobalamin because it contains a metal ion called cobalt. This makes it the largest and most complex vitamin of all. Vitamin $B_12$ can only be synthesized by bacteria and therefore is mainly present in animal products.

Option A: Vitamin$B_7$, also called biotin is a water-soluble vitamin. It helps in the metabolism of fats, carbohydrates, and protein. It cannot be synthesized by the human body but is produced by bacteria in the body, and is present in numerous foods. Therefore, this option is incorrect.

Option B: Vitamin $B_6$ or pyridoxine is a water-soluble vitamin. It helps in protein and glucose metabolism and the manufacture of hemoglobin. Therefore, this option is incorrect.

Option C: Vitamin $B_12$, also known as cobalamin, is a water-soluble vitamin involved in the metabolism of every cell of the human body. It plays an important role in the production of your red blood cells and DNA, as well as the proper functioning of your nervous system. Vitamin $B_12$is naturally found in animal foods, including meats, fish, poultry, eggs, and dairy. Therefore, this option is correct.

Option D: Folic acid is also known as vitamin $B_9$ and folacin, is one of the type B vitamins. It helps make DNA and other genetic material. It is also especially important in prenatal health. Therefore, this option is incorrect.

Thus, option (c) Vitamin $B_12$ is the correct answer.

Note:It is to be noted that even though the body contains only 2–5 mg of vitamin B12, it plays a vital role in the production of red blood cells. Vitamin $B_12$ deficiency may lead to a reduction in healthy red blood cells (anemia).