everyday science MCQ #5245

Hair, fingernails, hooves, etc., are all made of?

everyday science MCQ #5245

  1. Question 1

    Q1. Hair, fingernails, hooves, etc., are all made of?

    • A) Fat
    • B) Vitamins
    • C) Proteins
    • D) Iron

    Answer: Proteins

    Explanation: Hair, nails, hooves, horns, and feathers are all composed primarily of keratin, a tough fibrous structural protein.