Causes and Spread of Infection

Reflective Account building block 265 1.1 viruses Viruses be too hand rough to be seen by the naked eye. They endt multiply on their own, so they defy to invade a host cell and take each(prenominal) over its machinery in ordinate to be able to work up more(prenominal) virus particles. Viruses consist of transmittable actuals (DNA or RNA) surrounded by a protective show up of protein. They be equal of latching onto cells and wash upting inside them. The cells of the mucous membranes, such(prenominal) as those lining the respiratory passages that we breathe through, argon in particular open to virus attacks be example they atomic number 18 not covered by protective skin. bacterium Bacteria are organisms made up of near integrity cell. They are able of multiplying by themselves, as they have the power to divide. Their shapes vary, and doctors use these characteristics to go bad away them into groups. Bacteria know e verywhere, inside and on our bodies. roughly of them are completely faultless and some of them are very useful. besides some bacteria suffer cause diseases, both because they discontinue up in the wrong place in the bole or evidently because they are designed to invade us.

fungus kingdom all of a diverse group of eukaryotic single-celled or multinucleate organisms that recognize by decomposing and absorbing the organic fertilizer material in which they grow, comprising the mushrooms, molds, mildews, smuts, rusts, and yeasts, and assort in the kingdom Fungi. Parasites; Organisms obtaining commissariat from or living adept another organism (the host) for natural selection and ordinarily harming it and causing disease. some(a) parasites are in computeent and some depend entirely on their hosts and separate only when either one of them dies. Human parasites include bacteria, fungi, lice, viruses, and worms These are organism that provender on their hosts for example worms in the gut. 1.2 Viruses cause illnesses such as flue, HIv, Bacteria can cause food poisoning eg staphylococci A .and fungi can cause skin diseases eg athletes introduction infection, and parasites can use infection eg in humans...If you want to get a full essay, run it on our website: Orderessay

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