Final answer:
Hemoglobin is the protein found in red blood cells that carries oxygen and carbon dioxide. Myoglobin is a similar protein found in muscles that stores and releases oxygen. Hematocrit, ferritin, and transferrin are also involved in the transport and storage of iron in the body.
Step-by-step explanation:
Hemoglobin is the protein inside red blood cells that carries oxygen to cells and carbon dioxide to the lungs. It is made up of four subunits and four heme groups, and the iron associated with the heme binds oxygen. Myoglobin, on the other hand, is a protein found in muscles that stores oxygen and releases it to provide oxygen to muscle cells during exercise or low oxygen levels. Hematocrit is a measure of the percentage of red blood cells in the blood volume. Ferritin is a protein that stores iron and releases it when needed by the body. Transferrin is a protein that transports iron throughout the body.