Answer:
Virus is a ultramicroscopic pathogenic particle that consist of nucleic acid (DNA or RNA) enclosed in a protein coat and reproduces by binary fission.
Explanation:
Virus is a ultramicroscopic pathogenic particle capable of passing through bacteriological filters;
- consist of nucleic acid (DNA or RNA) enclosed in a protein coat
- capable of replicating within a living host only and spreading from cell to cell
- infects cells of bacteria, plants and animals
- hijack the metabolism of the infected cell, though they cannot carry out metabolism themselves.
- they reproduce by binary fission i.e without the formation of gametes