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Questions  

Choose the correct one.

a
Haemoglobin has four types of polypeptide chains.
b
Haemoglobin has two types of polypeptide chains.
c
Haemoglobin shows only tertiary structure.
d
Haemoglobin has only two polypeptide chains.

detailed solution

Correct option is B

Haemoglobin is a tetrameric protein with two types of polypeptide chains. These are two alpha and two beta units.

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