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
Select your answer:

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A. Light Pollution
B. Water Pollutilon
C. Air Pollution
D. Land pollution
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What molecule does osmosis specialize in?
A. Sodium
B. Sugar
C. Water
D. Lipids