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Question

Which of the following is a structural protein in animals?

A
Glycogen
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B
Chitin
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C
Keratin
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D
Pectin
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Solution

The correct option is C Keratin
The polysaccharide that serves to supply stiffness to an organism is structural polysaccharide.
Glycogen is a storage polysaccharide.
Chitin is a structural polysaccharide in fungi.
Keratin is a fibrous structural protein in animals. It protects the epithelial cells from damage or stress.
Pectin is a structural heterpolysaccharide contained in the primary cell walls of plants.
Thus, the correct answer is option C.

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