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Respiration — Bio Zoology STD 11 — Question

Tamilnadu BoardEnglish MediumSTD 11Bio ZoologyRespiration1 Mark
MCQ
Why does smoking affect the oxygen supply to the body?
  • A
    haemoglobin fails to bind with O2
  • ✓
    haemoglobin binds with carbon monoxide
  • C
    Nicotine makes the heart heat faster
  • D
    Blood vessels are narrowed
✓

Answer

Correct option: B.
haemoglobin binds with carbon monoxide
haemoglobin binds with carbon monoxide

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