Question

How do viruses work in the body?

Answer 1

In the five kingdom classification of Whittakar, there is no mention of some acellular organism organisms like viruses, viroids and lichens. Viruses are infectious agents, with simple, acellular organisation. They are exceptions to the cell theory. Viruses are a connecting link between living and non living entities, because they have characteristics of both living and nonliving things.

Complete answer:
When the virus is inside the cell, it'll open up in order that its DNA and RNA will begin and go straight to the nucleus of the host cell. They will enter a molecule, which is sort of a factory, and make copies of the virus. These copies will begin of the nucleus to be assembled and receive protein, which protects their DNA and RNA.
These new copies of the virus (millions of copies) will leave the already infected cell to infect other healthy cells, where they're going to multiply again. Infected cells are often damaged or die while hosting an epidemic.
It is important to clarify that when an epidemic infects a person, it doesn't always find itself during a disease. The infection occurs when the virus begins to multiply. And, the disease occurs when many body cells are damaged by the infection, which is additionally when the symptoms and illness appear.
In a nutshell, if the system manages to repel the virus that entered the cells and replicated, the person won't get sick. Nevertheless, the body will respond in several ways to fight these foreign bodies.
When the system fails to regulate the virus, a process called pathogenesis begins. The virus crosses obstacles like distance, the system or mucous membranes to succeed in different organs.
Once it begins to replicate, the person will get sick and his/her organs will be infected. Depending on how severe the symptoms are, the person will need to rest or seek medical help.

Note:
Reproduction of viruses is of 2 types: phagic and Pinocytic.
A. Phagic Reproduction: Only macromolecules of virus enter the host cell. It is further of 2 types:1. Lytic cycle: Occurs in virulent phases eg T4 bacteriophages. 2. Lysogenic cycle: Occurs in temperate viruses such as lambda phage.
B. Pinocytic reproduction: it's found in viruses like TMV, HIV, hepatitis B etc, during which whole virus particles enter the host cell except envelope(if present).