Answer: A substance in red blood cells consisting of the protein globin, iron & the
red pigment heme.
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Hemoglobin is the protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs. Hemoglobin is made up of four protein molecules (globulin chains) that are connected together.
Hemoglobin is a protein in your red blood cells that carries oxygen to your body's organs and tissues and transports carbon dioxide from your organs and tissues back to your lungs. If a hemoglobin test reveals that your hemoglobin level is lower than normal it means you have a low red blood cell count (anemia).
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Hemoglobin or haemoglobin (spelling differences) (from Greek words `αἷμα haîma 'blood' + Latin globus 'ball sphere' + -in) (/ ˌhiːməˈɡloʊbɪn ˈhɛmoʊˌ -/) abbreviated Hb or Hgb is the iron -containing oxygen -transport metalloprotein in the red blood cells (erythrocytes) of almost all vertebrates (the exception being the fish family Channichthyidae) as well as the tissues of some invertebrates.
Hemoglobin is a protein made up of four amino acid chains. Each of these chains contains heme a compound that contains iron and transports oxygen in the bloodstream. Hemoglobin is responsible for the shape of RBCs which usually appear like donuts—but with a thin center rather than a hole.
Hemoglobin (Hb or Hgb) is a protein in red blood cells that carries oxygen throughout the body. A low hemoglobin count is generally defin...