Question

what is the function of the melanocyte?

gives skin its hardness and water-resistant properties.
stem cell that produces keratinocytes.
protects skin from invading bacteria by phagocytosis.
protects from uv radiation.

Explanation:

Identify the function of melanocytes

Melanocytes are specialized cells located in the stratum basale of the epidermis that produce the pigment melanin. Melanin is packaged into melanosomes and transferred to neighboring keratinocytes, where it forms a protective shield over the cell nuclei to absorb and block harmful ultraviolet (UV) radiation.

Evaluate the given options

• "Gives skin its hardness and water-resistant properties" describes the function of keratin produced by keratinocytes.
• "Stem cell that produces keratinocytes" describes basal cells (stratum basale stem cells).
• "Protects skin from invading bacteria by phagocytosis" describes Langerhans cells (epidermal dendritic cells) or macrophages.
• "Protects from UV radiation" directly describes the primary protective function of melanin produced by melanocytes.

Answer:

• Gives skin its hardness and water-resistant properties.
• Stem cell that produces keratinocytes.
• Protects skin from invading bacteria by phagocytosis.
• Protects from UV radiation. (Correct answer)