Which protein is present in the exoskeleton?

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Question

(B) The exoskeleton of vertebrates (such as hair,nails,and horns) and the outer layer of skin are composed of a tough,fibrous structural protein known

Vedclass · Accepted Answer

Keratin

Vedclass · Answer

(B) The exoskeleton of vertebrates (such as hair,nails,and horns) and the outer layer of skin are composed of a tough,fibrous structural protein known as $Keratin$. $Collagen$ is the most abundant protein in the animal kingdom and is found in connective tissues. $Creatine$ is a nitrogenous organic acid that helps supply energy to cells,primarily muscle cells. $Casein$ is a family of related phosphoproteins commonly found in mammalian milk.

Column-$I$ (Amino Acid)	Column-$II$ (Example)
$P$. Acidic	$I$. Lysine
$Q$. Basic	$II$. Valine
$R$. Neutral	$III$. Glutamate

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Match the following columns:
Column-$I$ (Amino Acid) Column-$II$ (Example)
$P$. Acidic $I$. Lysine
$Q$. Basic $II$. Valine
$R$. Neutral $III$. Glutamate

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