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The Differences Between Viruses, Bacteria and Prions

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I am writing this research paper on the differences and similarities between bacteria, viruses, and prions. In this paper I will define each of the subjects that I am comparing and tell and show you how they are different and how they are similar. I will also tell you about their structure, how they reproduce, and a disease that is caused by each of them.
I will first start with defining all three subjects. Bacteria are known as large groups of unicellular microorganism that have cell walls but lack organelles, a nucleus, and bacteria are also prokaryotic. Viruses are infectious agents that consist of a nucleic acid molecule and replicates only within the cells of living host. Prions are miss formed proteins that are proteinases infectious agents responsible for fatal neurodegenerative in animals and humans. Prions are inherited and transmissible by ingestion, transplant, and surgical instruments.
The structures of all three of these subjects are very different. Bacteria have three different shapes known as strepocolli, which are chains of cocci that are spherical or oval shaped. Escherichia coli that lives in your intestines and are rod shaped. And vibrio’s that are spiral shaped. In bacteria, DNA and RNA are floating in the cytoplasm. Bacteria have a cell wall, a cell membrane, flagella, and ribosomes but do not have a nucleus. Viruses are sub-microscopic particle, about 20-300 nanometers. They have two main parts: a capsid which is composed of protein subunits and an inner core of nucleic acid, either DNA or RNA. They also have spikes made from a glycoprotein. Viruses have no cell wall, but they have a protein coat instead. They don’t have a nucleus also. Last but not least, prions: the normal protein prions are bounded to sur...

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