Bacteria or bacterium are unicellular microorganisms. They are essentially only a few micrometres long and form of various shapes including the spheres, rods and spirals.
A BACTERIAL CELL
Illustration courtesy of Wikipedia.
A Virus (from the Latin noun virus, meaning toxic or poison) is a sub-microscopic particle that infect the cells of a biological organism.
Illustration courtesy of mc3cb.com.
BACTERIA
VIRUS
STRUCTURE
Bacteria are unicellular organisms which are prokaryotic in nature due to the absence of a nucleus. Bacterium do not have organelles within their structure like the Endoplasmic Reticulem, The Golgi Apparatus or Vacuoles. Bacteria consist of ribosomes, a nucleoid that houses a strand of DNA material. (Extra loose DNA called plasmids can be found present for replication and reproduction.) Bacteria have a rigid wall and a cell membrane surrounding cytoplasm inside the cell. Some bacterium contains structures called flagella which aid in movement.
A virus is not a cell as it is not considered as living. All viruses have a protein coat that holds a coiled string of nucleic acid. (The genetic material either RNA or DNA.) A virus has no internal cellular structure, absent of both a cell wall and membrane.
OBJECTIVE
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TREATMENTS
Dependent on the type of bacterium, bacteria can do both good and bad things to and for the human body. Bacteria can be responsible for the cause of a disease. Pathogenic bacteria cause infectious diseases like Mycobacterium Tuberculosis and Streptococcus Salmonella, though we need certain types of bacteria in order to stay alive. Human bacterial flora is a friendly bacterium that’s beneficial to the body. Gut flora is the term for the many bacteria living in our digestive tracts. To eliminate an infectious
References: Diffen.com. 2014.Bacteria vs Virus - Difference and Comparison | Diffen. [online] Available at: http://www.diffen.com/difference/Bacteria_vs_Virus [Accessed: 04 Feb 2014] Microbeworld.org. Deena T Kochunni, J. H. 2014. Differencebetween Bacteria and Cyanobacteria ~ Biology Exams 4 U. [online] Available at: http://www.biologyexams4u.com/2012/10/difference-between-bacteria-and.html [Accessed: 04 Feb2014].