BI-2253
Effects of tobacco smoke
Biology · Secondary 4 · Medium · Effects of tobacco smoke
A woman smokes during pregnancy. Carbon monoxide in cigarette smoke enters her blood. How does this affect oxygen transport to the fetus?
- Carbon monoxide binds to haemoglobin, reducing oxygen transport to the fetus.
- Carbon monoxide increases the number of red blood cells, so more oxygen reaches the fetus.
- Carbon monoxide dissolves in plasma and carries extra oxygen to the fetus.
- Carbon monoxide breaks down haemoglobin into amino acids for the fetus.
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