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  2. DNA virus - Wikipedia

    en.wikipedia.org/wiki/DNA_virus

    Orthopoxvirus particles. A DNA virus is a virus that has a genome made of deoxyribonucleic acid (DNA) that is replicated by a DNA polymerase.They can be divided between those that have two strands of DNA in their genome, called double-stranded DNA (dsDNA) viruses, and those that have one strand of DNA in their genome, called single-stranded DNA (ssDNA) viruses. dsDNA viruses primarily belong ...

  3. Viral replication - Wikipedia

    en.wikipedia.org/wiki/Viral_replication

    It is the first step of viral replication. Some viruses attach to the cell membrane of the host cell and inject its DNA or RNA into the host to initiate infection. Attachment to a host cell is often achieved by a virus attachment protein that extends from the protein shell (), of a virus.

  4. Introduction to viruses - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_viruses

    When a virus infects a cell, the virus forces it to make thousands more viruses. It does this by making the cell copy the virus's DNA or RNA, making viral proteins, which all assemble to form new virus particles. [37] There are six basic, overlapping stages in the life cycle of viruses in living cells: [38]

  5. Virus - Wikipedia

    en.wikipedia.org/wiki/Virus

    A virus has either a DNA or an RNA genome and is called a DNA virus or an RNA virus, respectively. Most viruses have RNA genomes. Plant viruses tend to have single-stranded RNA genomes and bacteriophages tend to have double-stranded DNA genomes. [26]: 96–99 Viral genomes are circular, as in the polyomaviruses, or linear, as in the ...

  6. Lytic cycle - Wikipedia

    en.wikipedia.org/wiki/Lytic_cycle

    In the lytic cycle, the viral DNA exists as a separate free floating molecule within the bacterial cell, and replicates separately from the host bacterial DNA, whereas in the lysogenic cycle, the viral DNA is integrated into the host genome. This is the key difference between the lytic and lysogenic cycles.

  7. Viral life cycle - Wikipedia

    en.wikipedia.org/wiki/Viral_life_cycle

    To enter the cells, proteins on the surface of the virus interact with proteins of the cell. Attachment, or adsorption, occurs between the viral particle and the host cell membrane. A hole forms in the cell membrane, then the virus particle or its genetic contents are released into the host cell, where replication of the viral genome may commence.

  8. Viral transformation - Wikipedia

    en.wikipedia.org/wiki/Viral_transformation

    This viral DNA can either be incorporated into the host cell's genetic material or persist as a separate genetic vector. Either case can lead to damage of the host cell's chromosomes . It is possible that the damage can be repaired; however, the most common result is an instability in the original genetic material or suppression or alteration ...

  9. Nucleocytoviricota - Wikipedia

    en.wikipedia.org/wiki/Nucleocytoviricota

    The Megaviridae virus can be found infecting acanthamoeba or other protozoan clades. Once the virus infects the host, the replication cycle takes place in the cytoplasm. Within the genome, DNA repair enzymes can be found. These are used when the DNA is harmed such as when it is exposed to ionizing radiation or UV light. [14]