What describes only the quaternary structure of haemoglobin? 1 $alpha$-helix 2 a dipeptide 3 a globular structure 4 the specific order of amino acids 5 four polypeptide chains joined together

PROTEINS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

What describes only the quaternary structure of haemoglobin? 1

A	A 1, 2 and 3
B	B 2, 4 and 5
C	C 1 and 4
D	D 5 only

Explanation:

Detailed explanation-1: -Hemoglobin has a quaternary structure. It consists of two pairs of different proteins, designated the and chains. There are 141 and 146 amino acids in the and chains of hemoglobin, respectively.

Detailed explanation-2: -Hemoglobin is a globular protein. It is a carrier of oxygen in the blood. It has a quaternary structure. It is made up of four polypeptide chain which is bonded by hydrogen bonds.

Detailed explanation-3: -The quaternary structure describes the manner in which subunits are arranged in the native protein. Subunits are held together by noncovalent forces; as a result, oligomeric proteins can undergo rapid conformational changes that affect biological activity.

Detailed explanation-4: -An alpha helix is an element of secondary structure in which the amino acid chain is arranged in a spiral.

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BIOMOLECULES AND ENZYMES

BIOLOGY

PROTEINS