Multiple choice general knowledge

Horns, nails and hair are

  1. soluble fats

  2. insoluble carbohydrates

  3. keratin proteins

  4. complex lipids
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Horns, nails, and hair are all made of keratin, a tough, fibrous structural protein. Keratin is insoluble in water and organic solvents. It is NOT a fat, carbohydrate, or lipid.

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