Gce Model Questions Vol1 2022 Biology Question 7
Practice objective / multiple choice question 7 from the 2022 Gce Model Questions Vol1 Biology examination.
Sea‑level arterial oxygen partial pressure is 95 mmHg and the haemoglobin P₅₀ (partial pressure at 50 % saturation) is 26 mmHg. At an altitude of 3500 m the arterial PO₂ falls to 60 mmHg and a chronic increase in 2,3‑DPG raises P₅₀ by 5 mmHg. Using the Hill equation \(S = \frac{P^{n}}{P^{n}+P_{50}^{n}}\) with Hill coefficient \(n = 2.7\), calculate the arterial oxygen saturation at sea level and at altitude for the high‑altitude population, then state the percentage saturation at altitude.
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This is Gce Model Questions Vol1 2022 Biology Question 7. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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