The iron containing part of hemoglobin is the 'heme' molecule.
The special molecule in red blood cells is called hemoglobin.
hemoglobin
Red blood cells are packed full of a protein called hemoglobin. Hemoglobin has a molecule of iron in each protein molecule. This hemoglobin is what carries oxygen. The oxygen binds with the iron.
When a hemoglobin molecule is broken apart, the iron pigment is released. This is what is called the -"heme" part of the molecule.
Oxygen is transferred to the cells by our red blood cells which have a special molecule called hemoglobin inside. The hemoglobin molecule binds to the oxygen molecule and the reb blood cells transports the oxygen to wherever it is needed.
iron
Oxygen binds to a molecule called hemoglobin in red blood cells.
The hemoglobin molecule in red blood cells are responsible for transporting oxygen.
hemogoblin
Such a structure is called a Nucleosome
Red Blood Cells use the protein hemoglobin to transport oxygen throughout the body and carbon dioxide back to the lungs so that it can remove the waste from our bodies through the process of breathing. Hemoglobin also aids in the regulation of blood flow and blood pressure. Hemoglobin is made of two parts: heme is a pigment containing iron and globin is a protein. Oxygen is carried on the heme portion where as carbon dioxide is carried on the globin portion.
Hemoglobin is a protein with repeating segments called heme, each of which contains an iron atom, which is the active site where oxygen can be carried.