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Which of the follow… - QuestionCove
OpenStudy (anonymous):

Which of the following is most likely to cause respiratory problems in humans? carbon monoxide air pollution lead pollution in water nitrogen oxide air pollutants depletion of the ozone layer

5 years ago
OpenStudy (rogue):

Depletion of the ozone layer & lead pollution in water are definitely out. It's either carbon monoxide or nitrogen oxide. Carbon monoxide screws with hemoglobin in the blood and cytochrome oxidase in mitochondria, which affects oxygen transport and ATP synthesis. Nitrogen oxide can lead to inflammation of respiratory pathways & other stuff. Nitrogen oxide seems more directly related to the respiratory system, so I'd go with that.

5 years ago
sam (.sam.):

carbon monoxide is the worst case

5 years ago
OpenStudy (anonymous):

Mostly NOx, nitrogen oxide pollutants, I would say, which is why they are heavily regulated in engine emissions. In the atmosphere they undergo a variety of reactions and ultimately combine with water to form nitric acid, which irritates the air passages in the lung, causing all manner of chronic lung ailments. CO is also quite dangerous, of course, since it will displace O2 from hemoglobin -- meaning it will suffocate you, even in the presence of what would otherwise be sufficient oxygen. But I'm not sure you would call that a respiratory problem, since most people associate "respiratory" problem with things like asthma, chronic cough, COPD, emphysema, etc., for which NOx is your culprit.

5 years ago
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