Question

Melanoma cells expressing Fas ligand __________.

a) Promote apoptosis
b) Inhibit apoptosis
c) Enhance cell adhesion
d) Increase DNA synthesis

Answer 1

Melanoma cells expressing Fas ligand promote apoptosis.

Step-by-step explanation:

Melanoma cells expressing Fas ligand promote apoptosis.

Apoptosis is a process of programmed cell death that is essential for normal development and homeostasis in multicellular organisms. Fas ligand (FasL) is a protein that is expressed on the surface of certain cells, including melanoma cells. When FasL binds to its receptor (Fas) on target cells, it triggers a signaling pathway that leads to cell death.

For example, cytotoxic T cells and natural killer (NK) cells express Fas ligand, which binds to Fas on infected or abnormal cells and induces apoptosis to eliminate them.