Question

Vitamin b12 is attached to a protein called transcobalamin ii and travels in the blood bound to this protein. vitamin b12 is attached to a protein called transcobalamin ii and travels in the blood bound to this protein.

a. True
b. False

Answer 1

The answer is true. Vitamin B12is progressively immersed transversely the membranes of intestinal cells, where it is connected to a particular protein called transcobalamin II. This complex go through the portal vein and to the liver, where thereafter go in the bloodstream.