Keratinocytes

Question

Keratinocytes
A) produce skin pigments in cell organelles called melanosomes.
B) are responsible for the reduction of water loss from the skin.
C) determine thickness of the skin.
D) are special cells of the immune system.
E) are found in both the dermal and the epidermal layers of the skin.

Accepted Answer

Keratinocytes are responsible for producing the protein keratin, which helps to form a protective barrier on the skin and reduce water loss. They do not produce skin pigments or determine the thickness of the skin, and they are not special cells of the immune system. Keratinocytes are found only in the epidermal layer of the skin.