Topics: Gaseous Exchange in Humans Quiz
Which of the following is NOT the structure of haemoglobin?
A. Each haemoglobin molecule contains 4 haem group
B. Haemoglobin is a quaternary structure
C. Every each haem group in haemoglobin can bind with 4 molecule of oxygen
D. Each haemoglobin has 2 α-chain and 2 β-chain polypeptide subunits
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Why the gaseous exchange becomes less efficient for an emphysema patient?
A. alveolus wall is moist
B. the total surface area of alveolus decreases
C. alveolus is elastic
D. alveolus decrease in size