What component of the human epidermis functions to make the skin's surface extremely tough and resistant to bacterial enzymes?

Select one:

a. keratin

b. hypodermis

c. proteases

d. dermis

A. Keratin

Explanation:

Keratin is the tough and fibrous intercellular protein. It is present in the skin cells and makes them resistant against microbes and chemicals. Most of the epidermal cells are keratinocytes that produce keratin protein. And the presence of keratin proteins makes the skin tough and protects it from chemicals of microbial origins.