growth curve

Measurement of Growth Name : LEVENT Surname : DEMiRAY Student ID# : 140104012 plane section : molecular BIOLOGY AND GENETICS Date of Experiment : 27.02.2008 pussyfoot In the first science testing groundoratory section of semester, yield was measurement of microbial appendage. At the beginning, protester gave brief approximately six measurement way of microbial growth and manakin of microbial growth. The most commonly use measurement techniques atomic number 18 serial dilution and colony counting, microscopic mobile phone counts, membrane filtration, turbidity, mass determination and metabolic activity. In this lab cardinal 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 di luted samples are plated on bass complete media. There are two metal surface methods, spread plating and pour plating. They both have clean pros and cons. Moreover turbidity is based on the diffraction or chase away of light by bacteria. To measure absorbance rate spectrophotometer was used. The purpose of this experience 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 bacteri al universe 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 generations). This is called exponential function growth. In fact, exponential growth is only erupt of the bacterial life cycle, and not characteristic of the normal sort of growth of bacteria in nature (1). (2). Figure-1 As it prat 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: OrderCustomPaper.com

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