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Question
Carbon monoxide is a pollutant because it
Carbon monoxide is a pollutant because it
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Solution
The correct option is B Combines with haemoglobin
When carbon monoxide (CO) is inhaled, it combines with the haemoglobin to form a stable compound called as carboxyhemoglobin (COHb). CO displaces oxygen attached to the carrier molecule, haemoglobin. The COHb bond is over 200 times stronger than oxygen's bond with haemoglobin. The strong COHb bond makes it difficult for the body to eliminate CO from the blood. At 30-50% COHb symptoms are nausea, severe headaches, dizziness and increased pulse and respiration. COHb levels over 50% cause progressive symptoms proceeding to loss of consciousness, collapse, convulsions, coma and finally death.Therefore, the correct answer is option B.
When carbon monoxide (CO) is inhaled, it combines with the haemoglobin to form a stable compound called as carboxyhemoglobin (COHb). CO displaces oxygen attached to the carrier molecule, haemoglobin. The COHb bond is over 200 times stronger than oxygen's bond with haemoglobin. The strong COHb bond makes it difficult for the body to eliminate CO from the blood. At 30-50% COHb symptoms are nausea, severe headaches, dizziness and increased pulse and respiration. COHb levels over 50% cause progressive symptoms proceeding to loss of consciousness, collapse, convulsions, coma and finally death.
Therefore, the correct answer is option B.
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