Viruses And Prions Need A Host Essay

1206 Words May 2nd, 2016 null Page
Bacteria, virus, and prions all play a part in our life, good and bad. Bacteria are forms of life that are considered living. That’s the difference between virus and prions, who lack the ability to reproduce once they are isolated. The reason behind that is because viruses and prions need a host to reproduce. Bacteria are single celled microbes. The cell is simpler than other organisms because there is no nucleus or membrane bound organelle. Bacteria’s genetic information is contained in a single loop of DNA. They reproduce by binary fission in which the single cell divides into two identical daughter cells.
It is a continuous debate whether viruses are living and non-living. They can infect any animal, plant, or bacteria. A virus has linear double or single stranded DNA or RNA while Bacteria have double stranded DNA. A virus cannot replicate without the help of a host cell. They infect organisms through the insertion of their DNA and RNA into their host DNA. When it comes to sizes, viruses are smaller than bacteria.
Prions are infectious proteins that affect both humans and animals, normally present in brain cells. Prions are flexible and adopt many different shapes. The misfolded prions can force the normal prions to change into a misfolded shape. This can be deadly as the amount of misfolded proteins build up. A small dose of misfolded prions can infect the whole organism.
Viruses have an outer capsid, composed of protein subunits and an inner core of nucleic acids…

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