iron
The iron containing part of hemoglobin is the 'heme' molecule.
A portion of the heme group
Hemoglobin contains a heme group with an Iron ion attached to it. The iron is what binds to O2.
Haemoglobin is found in red blood cells in the blood. Its function is to carry oxygen to all parts of the body through oxygenated blood.
The porphyrias are disorders in which the body produces too much porphyrin and insufficient heme (an iron-containing nonprotein portion of the hemoglobin molecule).
Iron is the essential element needed to make hemoglobin, a protein found in red blood cells that carries oxygen throughout the body. Iron is incorporated into the hemoglobin molecule during its synthesis in the bone marrow.
Nothing
No, carbon dioxide (CO2) binds to a different site on hemoglobin than oxygen (O2). CO2 primarily binds to the amino groups of the protein portion of hemoglobin, forming carbaminohemoglobin. This is an important way that CO2 is transported in the blood.
4 polypeptide chains, each bound to a heme group to form hemoglobing
myosin cross-bridges
Cells make up the solid portion which is 45% of the blood. red blood cells, hemoglobin, whiteblood cells, and platelets.
The medical terminology combining form -globin refers to a protein component found in hemoglobin. It is specifically related to the protein portion of hemoglobin molecules.