MLT1 Task 11 Essay Example | Topics and Well Written Essays - 500 words

MLT1 Task 11 - Essay Example nd beverages such as of fermented milk, wine, alcohol, yoghurt, sauerkraut, and so on, aids in agricultural production through nitrogen fixation, for example, are useful inn study and manipulation of the DNA of plants and animals (genetic engineering/ biotechnology), and in the development of vaccines. In all the samples that I studied, that is, those from water, soil, and air, there were evidences of microbial growth after allowed periods of incubation in the respective Petri-dishes at room temperature. However, also, there were no distinct colony characteristics in all the dishes which had various kinds of colonies, colors, shapes and other such definitive features. Five kinds of colonies were evident on the air dish and had various sizes (6mm, 4mm, 13mm, 5mm and 9.5mm) and shapes (with four being irregular and one round shaped). Margins were either lobate (2) or wavy (3) with the surfaces wrinkled, smooth or smooth with contoured edges. The first colony was milky white, the second had a white center with clear surrounding, the third had a white center with milky white surrounding, the fourth had yellow, gold, clear surrounding and the fifth had a tan center with a white/ clear ring. Two colonies were seen in the soil (one 10mm and the other less than 1 mm in size). The first colony lacked a definite shape or margin while the second was irregularly shaped with a lobate margin. All surfaces were wrinkled. The first colony was clear and the second was cream white. There were four different colonies in the water sample (dish) (4mm, 5mm, 1mm, and 30mm). Three were round and one irregular, with two margins lobate and the other two smooth. All surfaces of the water colonies were smooth. Colors differed from tan to white, orange, clear to off white and lastly, transparent. As noted in C above, all the dishes from water, air, soil and skin samples had an array of different kinds of microbial colonies. This is a result of the fact that each of these microbial