Question

define viruses.................

Answer 1

Viruses are ultramicroscopic organism s that are visible only through electron microscope. They are smaller than bacteria. They cannot reproduce by their own as they lack the required machinery for replication. Therefore, they need to infect a host cell. The virus gets inside the host cells and makes hundred and thousands of copies of itself by using the host machinery

Viruses are neither living or non-living. They are considered to be on the boundary line between living and non-living things becaues they cannot reproduce on their own and require a host cell to complete their life cycle.

Hope it is clear to you now,

Answer 2

VIRUSES ARE MICROSCOPIC ORGANISMS WHICH ARE EITHER LIVING OR NON LIVING. THEY CAUSE DISEASES LIKE CHICKEN POX