Microbiology Movement of Listeria monocytogenes inside of host cells is caused by: A Inducing host cell actin polymerization B The formation of pili (fimbriae) on the listeriae surface C Pseudopod formation D The motion of listeriae flagella 💡 Explanation Movement of Listeria monocytogenes inside of host cells is caused by: ✓ Correct Answer: A. Inducing host cell actin polymerization