Blood contains hemoglobin hemoglobin is a protein containing iron (fe) that transports oxygen around the body from the lungs to where it is needed, such as the brain or muscles.
magnetism property of iron Blood contains haemoglobin haemoglobin is an iron (fe) containing protein that transports oxygen around the body from the lungs to where it is needed, like the brain or muscles the structure of the haemoglobin molecule changes slightly depending on whether it is carrying oxygen or not.