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Question

Insulin receptors are.

A
Extrinsic proteins
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B
Intrinsic proteins
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C
G-proteins
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D
Trimeric proteins
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Solution

The correct option is A Extrinsic proteins
Insulin receptors are extrinsic proteins. They are made up of an alpha and a beta subunit that are held together by disulphide bonds. Insulin, which is a polypeptide hormone, binds to the extracellular face of the α-subunits.
Thus, the correct answer is 'Extrinsic proteins.'

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