growth curve

Measurement of Growth Name : LEVENT Surname : DEMiRAY Student ID# : 140104012 division : molecular BIOLOGY AND GENETICS Date of Experiment : 27.02.2008 plume In the first science testing groundoratory section of semester, national was measurement of microbial appendage. At the beginning, protester gave brief most six measurement way of microbial growth and stage of microbial growth. The most commonly use measurement techniques be serial dilution and colony counting, microscopic mobile phone counts, tissue layer filtration, turbidity, mass determination and metabolic activity. In this lab devil of them serial dilution and colony counting and turbidity were employ only. In serial dilution and colony counting which is also named as a viable cell counts, concentrated samples are dilute by serial dilution and then diluted samples are plated on affl uent complete media. There are two metal coat methods, spread plating and pour plating. They both have evenhandedly pros and cons. Moreover turbidity is based on the diffraction or break of light by bacteria. To measure absorbance rate spectrophotometer was used. The purpose of this assure is learning measurement methods of microbial growth completely and practicing these techniques efficiently. Besides, plotting the graph of growth curve is one of the other purposes of this experiment.

Introduction In the laboratory, under convenient circumstances, a growing bacterial globe doubles at regular intervals. Growth is by geometrical progression: 1, 2, 4, 8, etc. or 20, 21, 22 , 23.........2n (where n = the number of gen! erations). This is called exponential function growth. In fact, exponential growth is only collapse of the bacterial life cycle, and not characteristic of the normal intent of growth of bacteria in nature (1). (2). Figure-1 As it batch be seen from the figure 1 the population of bacteria in a...If you desire to get a full essay, order it on our website: OrderEssay.net

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