Question

Characteristics of viruses.​

Answer 1

Characteristics of Viruses

Though the details of virus infection and replication vary greatly with host type, all viruses share 6 basic steps in their replication cycles. These are:

1) attachment;

2) penetration;

3) uncoating;

4) replication;

5) assembly;

6)release.

As shown in , the virus must first attach itself to the host cell.

Answer 2

ANSWER :-

A few of the many characteristic features of viruses are listed below :-

• Viruses are sub-microscpoic organisms.

• Most of the viruses that are known, are generally found to be less that 200 mu in size.

• Viruses are obligate pasrasites.

• Viruses can be alive only for the time that they are inside a h o s t. They are not considered living while they exist in the outside or the environment on their own.

• Viruses can either have RNA (Ribonucleic Acid) or DNA (Deoxy-ribonucleic acid).

• Viruses can not be filtered out using bacterial filters because they can easily  p a s s  through filters of such sorts.

• Once a virus enters into a cell of a h o s t’s body, it takes complete control over the whole biochemical machinery that is present inside the h o s t cell and thus the h o s t cell then begins to synthesise virus particles instead of carrying out its normal activities.