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Home > Exam Questions > ATPL - Airline Transport Pilot Licence > Human Performance and Limitations > What is a principal mechanism by which carbon monoxide in tobacco smoke reduces the blood’s oxygen-carrying capacity?

479 - ATPL Question Bank in English - What is a principal mechanism by which carbon monoxide in tobacco smoke reduces the blood’s oxygen-carrying capacity?

Question 479 - Human Performance and Limitations - ATPL - Airline Transport Pilot Licence

It binds strongly to haemoglobin, reducing the haemoglobin available to transport oxygen.

It has such a low affinity for haemoglobin that it cannot interfere with oxygen binding.

It increases the number of oxygen-binding sites on each haemoglobin molecule.

It affects only the mechanical movement of the chest and cannot bind to blood pigments.

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