Multiple choice

Proteins make up about half of the human body's dry weight. Among the following, ------------------------ is a protein.

  1. Collagen

  2. Collodion

  3. Congo red

  4. Coomassie Brilliant Blue
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A Correct answer
Explanation

Collagen is a group of naturally occurring proteins found, in nature, exclusively in animals, especially in the flesh and connective tissues of mammals. It is the main component of connective tissue, and is the most abundant protein in mammals, making up about 25% to 35% of the whole-body protein content.

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