Microorganisms Case Study

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The study of microorganisms is called microbiology. Viruses, Bacteria, Protozoa, Fungi and Worms all come under this category. They have an incredible impact on our daily lives, even though these organisms are tiny and can only be seen when under a microscope. Named microbes for short, it is estimated that there are about 5 million trillion, trillion microbial cells Earth. The largest mass of living material on earth is constituted collectively by microbes. They are tied to the activities of all living things as they degrade organic matter and also provide key nutrients. However, some microbes are considered pathogenic. (The University of Manchester, 2015)
Pathogens are what cause disease in other organisms. These can range from the common …show more content…

These living conditions are affected by rate of O2, temperature and light intensity being at the optimum level. (General Bacteriology, 2015)
The characteristics of a gram negative bacteria include that it is single layered, has an outer membrane, It primarily excretes endotoxins, it is more resistant against antibiotics and it has a thick membrane. As compared to a gram positive bacterium which is many layered, has no outer membrane, primarily excretes exotoxins, it is resistant, but not as resistant to antibiotics as gram negative and it has a thinner membrane. (Diffen, 2015)
Bacillus Subtilis is an extremely common bacterium that is gram positive. It is found in soil and to tolerate extreme environmental factors, it forms a tough protective endospore. This bacterium is also rod shaped. (Probiotic, …show more content…

They are mainly used for application to the skin, inanimate objects and mucous membranes and are routinely thought of as topical agents. Antiseptics are a diverse class of drug and have anti- infective effects when applied to mucous membranes or the surface of skin. They can be either bacteriostatic, where they prohibit the growth of bacteria or bactericidal, where they simply kill off the bacteria. The main use of antiseptics is cleaning wound surfaces, and cleaning skin surfaces prior to surgical procedures. They are also used in oral hygiene by disinfecting the mouth as well as for disinfecting inanimate objects, such as surfaces of furniture and instruments. (Encyclopedia, 2015)
This all links to the topic of how clean is your face?, because these bacteria’s can be transferred via personal contact, therefore antiseptics are needed to kill these pathogens on places like the face.
In these series of experiments, what would like to be known is how bacterial growth is affected by antiseptics and how these antiseptics prevent bacteria on your

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