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STD 11 - 14. Breathing and exchange in gases — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 14. Breathing and exchange in gases1 Mark
MCQ
Oxy-haemoglobin dissociates into oxygen and deoxy-haemoglobin at
  • ✓
    Low ${O_2}$ pressure in tissue
  • B
    High ${O_2}$ pressure in tissue
  • C
    Equal ${O_2}$ pressure inside and outside tissue
  • D
    All times irrespective of ${O_2}$ pressure
✓

Answer

Correct option: A.
Low ${O_2}$ pressure in tissue
a
(a)More active tissue has much lower ${P_O}_{_2}$. Therefore much more oxygen is released from oxyhaemoglobin in the active tissue.

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