Virus Viruses are microscopic organisms. Viruses can exist outside the living cell for a long period of time but they cannot reproduce outside the living cell. Since the viruses can reproduce only inside the specific cell of the living host, they are called obligatory parasites. CharacteristRead more
Virus
Viruses are microscopic organisms. Viruses can exist outside the living cell for a long period of time but they cannot reproduce outside the living cell. Since the viruses can reproduce only inside the specific cell of the living host, they are called obligatory parasites.
Characteristics of virus
Virus is composed of RNA or DNA and protein.
It can reproduce inside the cell.
It contains genetic characteristics which are transmitted to offspring.
It does not have cellular structure.
It does not perform metabolic activities
They show the response to the light, chemical and heat.
The importance of Virus is:
It consists of genetic materials which are transmitted to their offspring’s.
Some viruses contain enzymes or vitamins e .g. Small pox virus contains enzymes like riboflavin and biotin.
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