Which is (are) true about the blood transport of iron? transferrin is a polysaccharide that transports iron in blood. transferrin is a protein that transports iron in blood. transferrin is found in liver and muscle to grab iron from blood. iron is transported in the blood as a free cation?

The correct answer is transferrin is a protein that transports iron in the blood. Transferrin is the most important iron-binding glycoprotein that controls the level of free iron in the blood. It is synthesized in the liver and then secreted into the plasma. Transferrin binds iron ions absorbed from the duodenum and "packs" it in the Fe3 + form.