A Limiting Factor for Viral Infection of Animals Cells Is

Question

A limiting factor for viral infection of animals cells is
A) presence of specific receptor molecules on the host cell.
B) internal metabolic temperature of the host cell.
C) nutrition of the host cell.
D) stage of cell cycle of the host cell.
E) culture conditions of the host cell.

Accepted Answer

Viruses require specific receptor molecules on the host cell to enter and infect the cell. Without these receptors, the virus is unable to initiate infection. Internal metabolic temperature, nutrition, and stage of cell cycle may affect the efficiency of viral replication but are not limiting factors for infection. Culture conditions may affect viral replication, but not the ability of the virus to infect the host cell.