Which protein is present in largest amount in human body?
A
Collagen
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B
Elastin
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C
Albumin
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D
Keratin
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Solution
The correct option is D Collagen Collagen protein is present in the largest amount in the human body. Collagen is the main structural protein of the various connective tissues in animals. As the main component of connective tissue, it is the most abundant protein in mammals, making up from 25% to 35% of the whole-body protein content. Collagen, in the form of elongated fibrils, is mostly found in fibrous tissues, such as tendons, ligaments and skin. It is also abundant in corneas, cartilage, bones, blood vessels, the gut, intervertebral discs and the dentin in teeth.