FOOD TECHNOLOGY

Detailed explanation-1: -It is essential to understand that only certain species of hosts or certain cells can serve as hosts for viruses or bacteria. Host cells that allow viruses or bacteria to invade them are called permissive cells.

Detailed explanation-2: -A virus is a tiny, infectious particle that can reproduce only by infecting a host cell. Viruses “commandeer” the host cell and use its resources to make more viruses, basically reprogramming it to become a virus factory. Because they can’t reproduce by themselves (without a host), viruses are not considered living.

Detailed explanation-3: -First, a virus finds an entry point on the surface of a host’s body, typically in the respiratory tract, including the mouth and nose. This is by far the most common route, particularly for pathogens such as rhinoviruses, coronaviruses, and influenza viruses.