Virus

Viruses consist of genetic materials (DNA or RNA) surrounded by a protective coat of protein. They are capable of latching onto cells and getting inside them.

Viruses are too small to be seen by the naked eye. They can’t multiply on their own, so they have to invade a ‘host’ cell and take over its machinery in order to be able to make more virus particles. They can be made harmless by changing their genetic code.

Comments are closed.