The structure of virus DNA is different from the DNA of the other organisms such as bacterium and human?

Question

what is this difference

Answer 1

I don't think there is one distinct difference really as virus DNA can intergrate and replicate within a human or bacteria so it can't be greatly different. It could be that viruses often have circular genomes although not always, but bacteria also have circular genomes.

Heres some more info from google;

A virus may employ either DNA or RNA as the nucleic acid. Rarely do they contain both, however cytomegalovirus is an exception to this, possessing a DNA core with several mRNA segments.[21] By far most viruses have RNA. Plant viruses tend to have single-stranded RNA and bacteriophages tend to have double-stranded DNA.[21] Some virus species possess abnormal nucleotides, such as hydroxymethylcytosine instead of cytosine, as a normal part of their genome.[21]

Viral genomes may be circular, such as polyomaviruses, or linear, such as adenoviruses. The type of nucleic acid is irrelevant to the shape of the genome. Among RNA viruses, the genome is often divided up into separate parts within the virion and are called segmented. Double-stranded RNA genomes and some single-stranded RNA genomes are segmented.[21] Each segment often codes for one protein and they are usually found together in one capsid. Every segment is not required to be in the same virion for the overall virus to be infectious, as demonstrated by the brome mosaic virus.[21]

A viral genome, irrespective of nucleic acid type, may be either single-stranded or double-stranded. Single-stranded genomes consist of an unpaired nucleic acid, analogous to one-half of a ladder split down the middle. Double-stranded genomes consist of 2 complementary paired nucleic acids, analogous to a ladder. Viruses, such as those belonging to the Hepadnaviridae, contain a genome which is partially double-stranded and partially single-stranded.[39] Viruses that infect humans include double-stranded RNA (e.g. Rotavirus), single-stranded RNA (e.g. Influenza virus), single-stranded DNA (e.g. Parvovirus B19) and double-stranded DNA (Herpes virus).

Answer 2

in some ways, a virus isn't really a full living organism.

it is only complete when it has merged into a human or animal, something like a parasite.