Multiple choice

Directions: Find one word that can be used in place of the given phrase:

a protein forming the basis of hair, feathers, hoofs, claws and horns

  1. kernel

  2. kerb

  3. kestrel

  4. keratin

  5. ketone

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Correct. The word keratin is a noun which means - a fibrous protein forming the main structural constituent of hair, feathers, hoofs, claws, horns etc.