Biological Role
Iron is an essential nutrient for all living organisms, from archaea to humans. It is a major component in hemoglobin, a protein that makes blood red and transfers oxygen to muscles, and is also found in many other proteins. Ruthenium, osmium, and hassium have no known role in the human body.
Read more about this topic: Group 8 Element
Famous quotes containing the words biological and/or role:
“Biological possibility and desire are not the same as biological need. Women have childbearing equipment. For them to choose not to use the equipment is no more blocking what is instinctive than it is for a man who, muscles or no, chooses not to be a weightlifter.”
—Betty Rollin (b. 1936)
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