Multiple choice general knowledge history

our nails are made up of...

  1. Fat

  2. Dead cells

  3. Calcium

  4. Lipid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nails are primarily composed of keratin, a tough protective protein produced by living cells in the nail matrix. As these cells grow outward, they die and become compressed, forming the hard nail plate we see. The keratin structure makes nails rigid yet slightly flexible.

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