Listeria Monocytogenes Pathogenesis is Directly Related to Its Ability To

Question

Listeria monocytogenes pathogenesis is directly related to its ability to
A) produce a powerful toxin.
B) form endospores.
C) produce a polysaccharide capsule.
D) live and reproduce inside its host's cells.
E) resist most antimicrobial agents.

Accepted Answer

Listeria monocytogenes pathogenesis is based on its ability to invade host cells and replicate within them. It uses a specialized mechanism called actin-based motility to move from cell to cell, which enables it to spread throughout the body without being exposed to the host's immune system. L. monocytogenes does produce toxins, but they are not as important in its pathogenesis as its ability to invade and replicate inside host cells. Endospore formation and capsule production are not characteristics of L. monocytogenes, and while it can be resistant to some antimicrobial agents, this is not the primary factor in its pathogenesis.