Which gas will replace oxygen in blood hemoglobin and thereby reduce the transport of oxygen to the brain? A) sulfur dioxide (SO₂) B) carbon monoxide (CO) C) carbon dioxide (CO₂) D) methane (CH₄)

Question

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Carbon monoxide has a higher affinity for hemoglobin than oxygen, meaning it will bind to hemoglobin in preference to oxygen. This reduces the amount of oxygen that can be transported to the brain, leading to hypoxia.

Which Gas Will Replace Oxygen in Blood Hemoglobin and Thereby