Haemoglobin, oxygen, and iron are carried by blood cells.
Transferrin in the blood carries iron to the bone marrow
The red blood cell is the iron-containing compound that carries oxygen in the bloodstream. The color of red blood cells will even change due to the concentration of iron in the blood.
The metal element that carries oxygen is iron.
The metal element that carries oxygen in the blood is iron, which is incorporated in the hemoglobin molecule.
The iron-containing protein found in red blood cells that carries oxygen is called hemoglobin.
Iron in the hemoglobin attracts and carries oxygen to the cells.