Question

Chemical signaling molecules on the surface of dying cells, which indicate that _____________ is occurring, are recognized by ________________ cells.

Answer 1

Chemical signaling molecules on the surface of dying cells, indicating apoptosis, are recognized by natural killer (NK) cells and trigger cell death.

Step-by-step explanation:

When a cell is damaged or potentially dangerous, it can initiate programmed cell death, or apoptosis, to prevent the release of harmful molecules. Chemical signaling molecules on the surface of dying cells, indicating apoptosis, are recognized by natural killer (NK) cells. NK cells respond to these signals and express surface molecules, such as the fas ligand, which binds to the fas molecule on the infected cell, inducing apoptotic signals and killing the cell and the pathogen.