How do keratinocytes acquire melanin?
A) Keratinocytes acquire melanin precursors (e.g.,tyrosine)from melanocytes via plasma membrane amino acid transporter proteins
B) Keratinocytes phagocytize cytoplasmic processes of melanocytes that contain melanosomes
C) mRNA molecules that code for melanin proteins are exported from melanocytes to keratinocytes
D) Melanocytes synthesize melanocyte-stimulating hormone.,which binds to receptors on keratinocytes
E) Melanocytes undergo apoptosis and export melanosomes via a holocrine mode of secretion

Question

Quizplus · Accepted Answer

Keratinocytes acquire melanin through the process of phagocytizing the cytoplasmic processes of melanocytes that contain melanosomes. This is a key part of the skin's pigmentation process, where melanin is transferred from melanocytes to keratinocytes.

How Do Keratinocytes Acquire Melanin