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BIOL 302: Bacteria, Viruses and Health - Essay Example

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These RNA viruses have a symmetrical capsid with 20 equilateral triangles with 20 edges and 12 points. Such a capsid is an example of a(n)
Developed and proposed by Huebner and Todaro, oncogene theory suggests…
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BIOL 302: Bacteria, Viruses and Health
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Download file to see previous pages factors (such as chemical carcinogens, radiation, or the normal process of aging) and cause cancer through the destruction of the normal "repressor system" (Gross 2015). Noteworthy, the repressor system maintain the "endogenous virogenes" (genes that produces type-C viruses) and the "oncogenes” (portion of the virogenes that transform normal cells into tumor cells) in an unexpressed form in the normal cells throughout the inactive phase.
Lysogeny is a viral reproduction mechanism that characterizes the infection and the subsequent integration of the bacteriophage into a host cell’s chromosome via its genome and replicates in concert with it. In this process, the genome of the bacteriophage (a collection of genes in the form of nucleic acid) becomes part of the host cells, but it assumes a dormant status and so does not affect the cell functioning. However, the viral nucleic acid becomes active at some point upon the host’s exposure to certain stimuli (such as ultraviolet radiation), after which the virus detaches itself from the host cell’s genetic material, annexes the functioning of the cell and begins production of progeny viruses. The release of new virus particles ultimately destroys the host cell with a consequential effect of new cell infections (Canchaya, et al. 244-257). Lysogenic cycle introduces disease causing viral genes into the host cells via nonlethal viral transduction and further affords greater frequency to post-infection processes. This is the process that herpes and HIV viruses enters and multiplies into the human body. The discovery of the lysogenic cycle also laid the groundwork for much of the modern day genetic ...Download file to see next pagesRead More
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