The function of keratin is:
A)to prevent the entry of water
B)to prevent the entry of pathogens
C)both A and B
D)both A and B and to prevent the loss of water

Question

Quizplus · Accepted Answer

Keratin is a structural protein that forms a tough, waterproof outer layer in the epidermis of the skin, nails, and hair. It serves to prevent the entry of pathogens and the entry or loss of water, making it essential for protecting the body from external factors such as infections, dehydration, and mechanical damage. Therefore, both choices A and B are correct, and D is the best choice that includes both of them, as well as the additional function of preventing water loss.

The Function of Keratin Is