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Question

Quaternary structure is present in:

A
Haemoglobin
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B
Histone
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C
Globulin
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D
Elastin
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Solution

The correct option is A Haemoglobin
The quaternary structure of proteins is observed in haemoglobin. It is composed of four subunits - two subunits of α type and two subunits of β type.

Histones are proteins that help in the packaging of DNA. Elastin is a protein that provides elasticity to several organs. Globulins are proteins found in our blood. Histone, elastin and globulins do not have tertiary structures.

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