Haemoglobin that contains oxygen contains iron in it.
Haemoglobin is a protein found in red blood cells that is responsible for carrying oxygen throughout the body. It has a unique structure that allows it to bind to oxygen molecules and transport them from the lungs to the tissues.
The iron atom in the center of the haemoglobin molecule is what allows it to bind to oxygen. When oxygen molecules come into contact with the iron atom, they form a reversible bond, creating oxyhaemoglobin. This oxyhaemoglobin is bright red in color and is what gives oxygenated blood its characteristic hue.
The iron in haemoglobin plays a crucial role in the oxygen transport process. It acts as a binding site for the oxygen molecules, allowing them to be carried by the haemoglobin protein. As blood flows through the lungs, oxygen molecules bind to the iron in haemoglobin, and as blood travels to the tissues, oxygen is released from haemoglobin to be used by the cells.
In summary, haemoglobin that contains oxygen contains iron in it. The iron atom in haemoglobin enables it to bind to oxygen molecules and facilitate the transport of oxygen throughout the body.