Researchers are probing how emperor penguins and other animals perform breath-defying feats. And the answers might eventually prove useful in medicine. When a person has a stroke or heart attack, the cells in the body wear outt buzz off enough oxygen (the person has a low oxygen level). If scientists could figure out what allows some animals to not only survive but also thrive in such tough conditions, that knowledge could show how to help human patients handle low oxygen levels better.
Humans cant last long on one breath. We wouldnt get much food. Without enough oxygen, we quickly go unconscious. But diving animals have ways of making one breath really last. As most birds and mammals inhale, oxygen enters the lungs and then moves on into the blood. A kind of molecule in the blood called hemoglobin sticks to oxygen, ferrying it â" like a boat carrying a passenger â" to different parts of the body. Another molecule called myoglobin stores oxygen in muscle. group O is important because it helps cells get energy from food. This chemical reaction makes water, hundred dioxide and ATP, a molecule that contains energy and powers the bodys activity. The light speed dioxide leaves...If you want to get a full essay, order it on our website: Orderessay
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