Final answer:
Hemoglobin and myoglobin have a complex structure involving heme and iron ions, enabling them to transport oxygen.
Step-by-step explanation:
Five True Statements About Hemoglobin and Myoglobin Structure:
Heme is composed of an Iron ion. The heme group in hemoglobin and myoglobin contains an iron ion at its center.
Oxygen molecules bind to the iron in the heme group. The iron atom in the heme group of hemoglobin and myoglobin forms a bond with oxygen molecules, enabling oxygen transport.
Hemoglobin contains four subunits. Hemoglobin is a quaternary protein consisting of two alpha and two beta subunits.
The shape of the hemoglobin molecule changes when oxygen binds to the iron. This change in shape facilitates oxygen binding and release.
Hemoglobin transports oxygen in the blood. Oxygen molecules are carried by hemoglobin after binding to the iron in its heme groups.