In urban centers, the incomplete combustion of hydrocarbon fuels in gasoline engines and power generators releases carbon monoxide () into the atmosphere. Which of the following best describes the primary physiological effect of this gaseous pollutant on human health?
- It binds readily with hemoglobin to form carboxyhemoglobin, drastically reducing oxygen transport to body tissues.Cevap
- BIt combines with cellular fluid to cause thermal denaturation of metabolic enzymes throughout the body.
- CIt inhibits the photolysis of water within red blood cells, preventing the light reaction of respiration.
- DIt breaks down the peptidoglycan layer of red blood cell membranes, destroying cellular structural integrity.
Cevap
Carbon monoxide binds readily with hemoglobin to form carboxyhemoglobin, drastically reducing oxygen transport to body tissues.
Carbon monoxide () is an atmospheric pollutant resulting from incomplete fuel combustion. It binds to hemoglobin with significantly higher affinity than oxygen, forming carboxyhemoglobin. This prevents hemoglobin from binding and transporting oxygen to tissues, causing cellular hypoxia.
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Anahtar Kavram
Air Pollution and Physiological Effects of Carbon Monoxide
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