What compounds transport hemoglobin in animals and humans?

Hemoglobin is found in red blood cells in the blood cells; these are the most nuclear-free blood cells that are biconcave in shape. Inside the red blood cell contains a hemoglobin protein, which has a quaternary structure that connects the globules with heme iron. Hemoglobin is involved in the transport of gases, most importantly oxygen. Combining with oxygen, hemoglobin turns into a chemical compound – oxyhemoglobin, which is light scarlet in color, and is transferred with the help of red blood cells to all cells and tissues, and hemoglobin collects carbon dioxide from cells and tissues, turning it into carbohemoglobin.

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