Which of the following bonds does not partici | vedclass

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(D) The quaternary structure of proteins refers to the arrangement of multiple polypeptide chains (subunits) into a single functional complex. These s

Vedclass · Accepted Answer

Covalent bond

Vedclass · Answer

(D) The quaternary structure of proteins refers to the arrangement of multiple polypeptide chains (subunits) into a single functional complex. These subunits are held together by non-covalent interactions,which include hydrogen bonds,ionic bonds,and hydrophobic interactions. Disulfide bonds (covalent) can also stabilize the structure between subunits. However,a general 'covalent bond' (such as a peptide bond) is responsible for the primary structure (the linear sequence of amino acids) within a single polypeptide chain,not for the association of subunits in the quaternary structure. Therefore,the general term 'covalent bond' is the correct answer as it refers to the primary structure linkage.

List-$I$	List-$II$
$1$. Collagen	$p$. Fights infectious agents
$2$. Trypsin	$q$. Hormone
$3$. Insulin	$r$. Enzyme
$4$. Antibody	$s$. Intercellular ground substance

Which of the following bonds does not participate in the formation of the quaternary structure of proteins?

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Match List-$I$ and List-$II$ with respect to proteins and their functions and select the correct option.
List-$I$ List-$II$
$1$. Collagen $p$. Fights infectious agents
$2$. Trypsin $q$. Hormone
$3$. Insulin $r$. Enzyme
$4$. Antibody $s$. Intercellular ground substance

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