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[[Image:Virus.jpg|right|350px|thumb|Microscopic view of a virus.]]
[[Image:Virus.jpg|right|350px|thumb|Microscopic view of a virus.]]
A '''virus''' is a microscopic, non-[[cell]]ular, infectious agent that has two characteristics: It has genetic material (either [[DNA]] or [[RNA]]) inside a protective [[protein]] coat (called a "capsid").<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref> Uniquely, viruses may contain single or double stranded nucleic acid. All other organisms are based on double stranded DNA.
A '''virus''' is a microscopic, non-[[cell]]ular, infectious agent that has two characteristics: It has genetic material (either [[DNA]] or [[RNA]]) inside a protective [[protein]] coat (called a "capsid").<ref>Wile, Dr. Jay L. ''Exploring Creation With Biology''. Apologia Educational Ministries, Inc. 1998</ref> Uniquely, viruses may contain single or double stranded nucleic acid. All other organisms are based on double stranded DNA.
'''Lytic'''<br />
'''Lytic'''<br />
The first step to viral replication is entry into the cell. The virus uses proteins in either its capsid or envelope to bind to a protein on the surface of the cell. Each virus can only use certain proteins which influences which cells they are able to infect (a property called '[[tropism]]'). One inside, the virus leaves behind its protein coat in the cell wall and prepares to be replicated. The process of replication will differ based upon whether or not the virus is DNA based or RNA based. Following replication virus particles self assemble and leave the cell, either by bursting through the membrane or budding off leaving the membrane intact.
The first step to viral replication is entry into the cell. The virus uses proteins in either its capsid or envelope to bind to a protein on the surface of the cell. Each virus can only use certain proteins which influences which cells they are able to infect (a property called '[[tropism]]'). One inside, the virus leaves behind its protein coat in the cell wall and prepares to be replicated. The process of replication will differ based upon whether or not the virus is DNA based or RNA based. Following replication virus particles self-assemble and leave the cell, either by bursting through the membrane or budding off leaving the membrane intact.
'''Lysogenic'''<br />
'''Lysogenic'''<br />