Carbon monoxide (CO) is toxic to humans because it: A) binds to myoglobin and causes it to denature. B) is rapidly converted to toxic CO₂. C) binds to the globin portion of hemoglobin and prevents the binding of O₂. D) binds to the Fe in hemoglobin and prevents the binding of O₂. E) binds to the heme portion of hemoglobin and causes heme to unbind from hemoglobin.

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Carbon monoxide (CO) is toxic because it binds with high affinity to the iron (Fe) in hemoglobin, preventing oxygen (O2) from binding and being transported to tissues.

Carbon Monoxide (CO) Is Toxic to Humans Because It