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I challenge you to test your knowledge by completing my DARE! 

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I challenge you to test your knowledge by completing my DARE! 

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Make your own quizzes for free on Qzzr, the world's simplest quiz tool.

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Each red blood cell contains 280 million hemoglobin molecules.

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A average adult has approximately FIVE billion red blood cells

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Hemoglobin gives red blood cells its red colour.

It contains hydrophobic amino acid in the inside and hydrophilic on the outside

Hemoglobin is found in all red blood cells.

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The main function of hemoglobin is to transport oxygen from the lungs to the bodies tissues and then transport carbon dioxide out of the tissue and back to the lungs.

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The Structure of Hemoglobin and how it allows the protein to complete its function:

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The Structure of Hemoglobin and how it allows the protein to complete its function:

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The hemoglobin molecules has 4 subunits making it a quaternary protein.  Each subunit which is a tertiary protein is called a heme group which contains one iron atom. Each iron atom can bind to one oxygen atom. So the whole hemoglobin molecule can carry four oxygens. When the first oxygen atom binds to the first iron atom a conformational change occurs in the shape of the hemoglobin causing the other heme groups to become oxygenated more easily. Making the ability for hemoglobin to bind more oxygen more easily. This is called cooperative binding.