N.p., n.d. Web. 16 Feb. 2014. "Neurology." - Medical Specialties.
14 Apr. 2014. “Microbiologytext.com." The Microbial World. JMstudio.nl Webdesign, n.d.
When it comes down to epigenetic alterations in oncogenic viruses, it leads to the discovery of how viruses can infect our cells through inheritance such as some cancers. Deoxyribose and ribose are two nucleic acids that provide clues in the epigenetic alterations in early oncogenic viruses. Since DNA has the instructions for making the proteins, but it has to be highly protected, it doesn’t leave the nucleus where it is mostly found (Hall, 6). DNA’s function is to be a long-term storage and transmission of the genetic information (DNA vs RNA, 2014). Copies of certain instructions needed for proteins can be made in the form of RNA.
They cannot reproduce without the use of a host. A capsid surrounds the virus. The capsid is made of protein subunits. It has three main functions, first, to protect the nucleic acid within from digestion. Secondly, hold proteins that attach to certain host cells for reproduction.
While the definition of living organisms must be adapted, the majority of evidence leads to the classification of viruses as living organisms. Viruses are composed of a nucleic acid core, a protein capsid, and occasionally a membraneous envelope. The nucleic acid core is composed of either DNA or in the case of retroviruses, RNA, but never both. In retroviruses, the RNA gets transcribed to DNA bye the enzyme reverse transcriptase. The protein capsid is a protein layer that wraps around the virus.
2) A protein which is extremely important in a hazardous virus because is provides a strong, protective barrier as the virus passes from cell to cell.2 Viruses do not contain the enzymes and metabolic pressures needed for self-duplication. The missing components are taken from the host cells they infect. Replication begins when the virus enters the cell. The enzymes remove the coat of the virus, and the RNA or DNA particles come in contact with the ribosomes in the cell. The virus then finds the protein by using the nucleic acid.