Each globulin chain contains an important central structure called the heme molecule. Embedded within the heme molecule is iron that is vital in transporting oxygen and carbon dioxide in our blood. The iron contained in hemoglobin is also responsible for the red color of blood.Hemoglobin also plays an important role in maintaining the shape of the red blood cells.mbedded within the heme molecule is iron that is vital in transporting oxygen and carbon dioxide in our blood. The iron contained in hemoglobin is also responsible for the red color of blood. Hemoglobin also plays an important role in maintaining the shape of the red blood cells.
Beet Pulp (beet pulp, dried molasses and beet pulp, dried, plain) - the dried residue from sugar beets. Chicken-the clean combination of flesh and skin with or without accompanying bone, derived from the parts or whole carcasses of chicken or a combination thereof, exclusive of feathers, heads, feet and entrails.
Many of these foods have also been known to cause illness in humans and are also a good choice to stay away from in all pet and people foods. 1  Maple Syrup. Found in only one percent of dog food, this may not be a leading cause of cancer but it does feed cancer according to Natural News. 2  BHT/BHA and Ethoxyquin.