Final answer:
True, the transcobalamin II-B12 complex is transported to the bone marrow for hematopoiesis and the liver for storage. This is a key facet of the vitamin's role in the body, which also links to how iron is transported and stored in various parts of the body.
Step-by-step explanation:
The statement about the transcobalamin II-B12 complex being transported to the bone marrow and liver is true. After Vitamin B12 is ingested and combines with intrinsic factor, it forms a complex with transcobalamin II, which is indeed transported to the bone marrow where it is essential for hematopoiesis, the process of forming new blood cells. Additionally, the liver serves as a storage site for Vitamin B12, which is vital considering the body's limited capacity to absorb this vitamin.
It is also important to understand iron transport and storage in the context of erythropoiesis - the production of red blood cells. Hemoglobin, which is broken down into biliverdin, contains heme groups with iron ions that are vital for oxygen transport. These iron ions bind to transferrin, a blood protein, for transport. Ferritin and hemosiderin store iron in the liver or spleen, or the iron may be carried to the bone marrow by transferrin to be recycled into new erythrocytes.