Hemoglobin has tetrahedral structure containing four heme groups that surround a globin group.
Heme is ringlike organic compound also known as a porphyrin to which an iron atom is attached. There are four iron atoms that bind four oxygen atoms and transport them to tissues.
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Tornado is damaging during a thunderstorm;)
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The curvature of the magnetic fields near the sun's equator creates pockets of the photosphere that aren't warmed by convection.
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When the fertilized egg implants somewhere outside the uterus is called ectopic pregnancy
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B white blood cells function as your immune systems body guards. Osmosis Jones is a great movie to watch in order to learn more about it :)
