Which of These Proteins Functions to Store or Transport Iron

Question

Which of these proteins functions to store or transport iron?
A) hemoglobin
B) ferritin
C) hemosiderin
D) transferrin
E) ferritin, hemosiderin, and transferrin

Accepted Answer

Ferritin, hemosiderin, and transferrin are all involved in the storage or transport of iron. Ferritin and hemosiderin store iron within cells, while transferrin is a plasma protein that transports iron throughout the body. Hemoglobin, although it contains iron, is primarily responsible for oxygen transport in the blood rather than iron storage or transport.