How does an increase in carbon monoxide levels affect the oxygen-carrying capacity of hemoglobin?
A
It increases the oxygen-carrying capacity of hemoglobin
B
It has no effect on the oxygen-carrying capacity of hemoglobin
C
It decreases the oxygen-carrying capacity of hemoglobin
✓
D
It alters the shape of the hemoglobin molecule, making it more efficient
Explanation
Carbon monoxide binds to hemoglobin with high affinity, displacing oxygen and reducing the oxygen-carrying capacity of the blood.
Source
Harrison's Principles of Internal Medicine
Hematology
Hematology: Hemoglobin and Oxygen Transport
Hematology: Hemoglobin and Oxygen Transport
Medium
MEDICAL
Confidence: high
