if genetic material in living cell and virus is same than why they are different?

Because virus are only made of RNA and need the DNA in other cells to replicate.

BOth cells are not similar structurally....:)

A normal living cells..possess ..a mitochondria,chloroplast,ribosomes etc..which are absent in a virus..

A virus is nothing but a nucleic acid...in a cover called capsid..which is inactivised state outside host...and gains reactiveness on entering host celll...and controls the host cell..literally...and produce products required for the virus...

Before going to into depth about cells and structure..lets mention a point..

Virus is a particle...the only connecting link between the living and nonliving things...and the only character of living thing is the REPRODUCTION...which cannot be carried ..without a host celll(living cell)

viruses are a form of life, or organic structures that interact with living organisms. They have been described as "organisms at the edge of life", since they resemble organisms in that they possess genes and evolve by natural selection, and reproduce by creating multiple copies of themselves through self-assembly. Although they have genes, they do not have a cellular structure, which is often seen as the basic unit of life. Viruses do not have their own metabolism, and require a host cell to make new products. They therefore cannot naturally reproduce outside a host cell

http://biology.about.com/od/virology/ss/Virus-Repl...

http://en.wikipedia.org/wiki/Virus#Genome

http://faculty.clintoncc.suny.edu/faculty/michael....

http://www.worsleyschool.net/science/files/virus/p...

http://www.slic2.wsu.edu:82/hurlbert/micro101/page...

http://www.synapses.co.uk/science/fluvirus.html

No, they are not structurally similar at all; except for the fact viruses can carry genetic material. But even then, viruses cannot carry both DNA and RNA at the same time, while living cells can contain both at the same time (i.e. when DNA replication is occuring somewhere, translation of mRNA can be happening somewhere else).

Viruses are "obligate parasites", meaning they need a host to survive. Once they get a host, they use the host's machinery to create new copies of viruses - that's their way of "reproducing".

=)

Viruses debris are composed of a protein coat, the capsid, and a center of the two DNA or RNA which may well be unmarried or double-stranded. some have a ingredient of the host's changed plasma membrane talked approximately as the envelope. Viruses have not have been given any enzymes in touch with capability conversions. Viruses are obligate endocellular parasites. Viruses may well be crystalized in assessment to living cells.