Gce Model Questions Vol1 2024 Biology Question 4

Practice essay / theory question 4 from the 2024 Gce Model Questions Vol1 Biology examination. This question covers transport of gases, respiratory system .

Gce Model Questions Vol1 2024 Biology Essay / Theory
Topics: transport of gases respiratory system
Question 4 GCE_MODEL_QUESTIONS_VOL1 • 2024 • BIOLOGY • essay
Gce Model Questions Vol1 2024 Biology Question 4 diagram

The labelled diagram illustrates the pathway of air from the external environment to the alveoli and the return pathway of blood from the alveoli to the heart in the human respiratory system.

Question Parts

( a )
Describe, in the correct order, the route taken by inhaled air from the nostrils to the alveoli, naming each structure shown in the diagram.
( b )
Explain the mechanism of gas exchange at the alveolar‑capillary membrane, including the role of partial pressure gradients and haemoglobin.
( c )
Compare the transport of oxygen and carbon dioxide in the blood, stating the principal forms in which each gas is carried and the physiological reason for these differences.

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About This Question

This is Gce Model Questions Vol1 2024 Biology Question 4. It is one of the essay questions from the 2024 Gce Model Questions Vol1 Biology examination.

The question covers transport of gases, respiratory system .

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