Keratin is an intracellular fibrous protein that gives hair, nails, and skin their hardness and this?

Keratin is an intracellular fibrous protein that gives hair, nails, and skin their hardness and this?

  • Correct Answer: water-resistant properties
  • friction resistant properties
  • heat resistant properties
  • cold - resistant properties

Explanation: The cells in all of the layers except the stratum basale are called keratinocytes. A keratinocyte is a cell that manufactures and stores the protein keratin. Keratin is an intracellular fibrous protein that gives hair, nails, and skin their hardness and water-resistant properties. The keratinocytes in the stratum corneum are dead and regularly slough away, being replaced by cells from the deeper layers (Figure 5.4).

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