Animal Health Assignment (Includes pathogens- ie. viruses, bacteria, protozoa etc. and vaccination)

wellness is a state of physical and psychological well-being. Health is compromised by illness. Disease is any condition which causes deviation from the regular conditions you expect to see during an animals life. Disease is caused by micro organisms c all(prenominal)ed pathogens; these complicate viruses, bacteria and protozoa. VIRUSES Size: in the midst of 30 and 300 nm viruses argon a protein rise up ab protrude a deoxyribonucleic acid or RNA strand. They are not animation cells as they have no transfiguration of their own. They are all parasites which reproduce within host cells and down them. Methods of spoilion include: *By water *By droplet (sneezing) *By sender (another animal which carries the disease without developing it itself, eg. Mosquitoes, fleas) Method of Infection (virus) 1) Virus injects DNA (genes) into bacterium. 2) Virus genes parade assembly of hundreds of saucily viruses- killing bacterium. 3) untested viruses freed from assassinated cell to attack further bacteria. BACTERIA Size: between 0.1 and 10µm Cell is unique in not having: *Nuclear tissue layer around its oneness(a) loop chromosome so there is no nucleus. *Mitochondria (cell membrane has no function) Reproduction is carried out asexually by binary fission. Binary fission 1) Starts with single cell 2)Cross wall laid down middleof the cell 3)Cell splits in 2 to form new cells Bacterial Shapes Coccus Bacillus vibrion Spirillum Bacteria throne be both assistive and harmful.

They are living cells which will multiply very cursorily in the right conditions by cell division. Harmful bacteria attack tissues or release poisons. Both bacteria and viruses can infect animals in the follo! wing ways: *By air- inhaling thin droplets of give mucous expelled during coughing and sneezing. *By water- especially if dirty by faeces eg. Cholera and dysentery *By mud- introduced into wounds eg. Tetanus and gangrene *Sexually- during copulation *By vectors eg. Mosquitoes- chicken fever In oecumenical viruses... If you want to get a full essay, order it on our website: OrderEssay.net

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