Gce Model Questions Vol1 2017 Biology Question 8
Practice objective / multiple choice question 8 from the 2017 Gce Model Questions Vol1 Biology examination.
A mountain goat lives at high altitude. Its alveolar surface area is 1.8 times that of a lowland goat, and the alveolar membrane thickness is reduced to 0.8 times the lowland value. According to Fick's law, the diffusion rate of O\(_2\) is proportional to \(\dfrac{\text{area}}{\text{thickness}}\times\Delta P\). The partial pressure difference of O\(_2\) between alveolus and blood is the same (30 mmHg) in both goats, but the mountain goat's haemoglobin has a 10% higher affinity, effectively increasing \(\Delta P\) by 10%. By what factor is the O\(_2\) diffusion rate in the mountain goat greater than in the lowland goat? Give your answer to two decimal places.
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This is Gce Model Questions Vol1 2017 Biology Question 8. It is one of the objective questions from the 2017 Gce Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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