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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases1 Mark
MCQ
Mark the incorrect statement in context to O2 binding to Hb:
  • A
    Higher pH.
  • B
    Lower temperature.
  • C
    Lower pCO2.
  • D
    Higher pO2.
✓

Answer

  1. Higher pH.

Explanation:

Binding of oxygen with haemoglobin is primarily related to partial pressure of O2. In alveoli, high pO2, low pCO2, less H concentration and lower temperature facilitate formation of oxyhaemoglobin.

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