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.
Grain is a common dog food ingredient, but some dogs have allergy problems when they eat food with grain products like barley, wheat, rice, or corn. Others need a highly digestible food. Merrick makes two varieties of dry dog food, Classic and Grain Free, to accommodate any canine's nutritional needs.holesome Ingredients. Both Merrick Classic and Grain Free dry dog foods contain wholesome ingredients. The foods with grain have real meat and use whole grains. The grain free varieties combine the meet with fruits and vegetables.