★ Gaseous Exchange in Humans Quiz
Tiny air sacs for gaseous exchange . It looks like grape
A. Alveolus
B. Blood capillary
C. Lung
D. Trachea
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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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