Your body is made up of several hundred THOUSAND different kinds of proteins.
Proteins are made up of chains of amino acids. There are only 20 different amino acids commonly found in proteins.
In different combinations they can make proteins as different as hair and muscle!

Glycine is an Amino Acid.
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Question: What atoms are found in this molecule?
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HEMOGLOBIN is a very important protein.
This is the protein that makes your blood RED and carries OXYGEN from your lungs to the rest of your body.

HEMOGLOBIN is made up of 4 chains of Amino Acids.


(Hold down the SHIFT key and drag hemoglobin with your mouse to ZOOM.)

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