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Why carbon monoxide is toxic for humans

Explain why carbon monoxide is toxic for humans?

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Hemoglobin “likes” carbon monoxide (CO) greater than it likes oxygen. Whenever there is carbon monoxide in inhaled air it joins to hemoglobin making carboxyhemoglobin by taking up the binding site where oxygen would join. Due to higher hemoglobin affinity for carbon monoxide therefore (example, in intoxication from car exhausts) there is no oxygen transport and the individual endures hypoxia, loses conscience, inhales more carbon monoxide and might even die. Intoxication by carbon monoxide is a vital cause of death in fires and in the closed garages.

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