3303>They lack organelles and DNA of thier own. They cannot reproduce on thier own. That's all I can really think of. Look it up in the dictionary or a biology book.
Reply:non-cellular structure
need host to replicate
composed of nucleic acid
surrounded by capsid (or a protein coat)
non-respirating and does not grow
also, a virus is not a 'living cell', by definition.
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