Multiple choice

The most abundant protein in the human body is ____.

  1. collagen

  2. haemoglobin

  3. keratin

  4. myoglobin
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A Correct answer
Explanation

Collagen is the most abundant protein in the human body, making up about 30% of total protein content. It provides structural support to connective tissues like skin, bones, tendons, and ligaments. Haemoglobin is found only in red blood cells, keratin in hair and nails, and myoglobin in muscles.

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