Escherichia Coli Population Growth

Introduction The population of a bacterium will grow successfully in a particular pattern known as ‘logarithmic growth’ if the location is appropriate and the proper nutrients are present. The bacteria numbers will increase and most likely continue to double in this area over time with optimal conditions. Optimal conditions meaning that there are no dangers or limiting factors, to inhibit growth in this area, such as disease, predators, competition or lack of food. At first the bacteria should reproduce slowly, this is known as the lag phase but then over time it should increase more rapidly throughout what is called the log phase. This predictable pattern of growth can be called the organism’s biotic potation.
Procedure
During this exercise the population growth of the bacteria Escherichia coli (E.coli) will be measured. If the conditions are right, the E.coli population will grow more rapidly the longer it stays in that area. Turbidity, meaning cloudiness, will be how the tubes are measured to give the results of bacterial growth. The more turbid the broth the more bacteria count the tube will contain. For this particular exercise, a broth has been
Compared to the growth of human populations (Table 2) this seems as though these results could be true. The human population did not just happen over night. Table 2 expresses that over a long period of time the human population was very low and unpredictable. From about 1400B.C. to about 1300 there were only slight increases and decreases. This would have probably been the result of diseases, more energy needs, or even food shortages. When different elements are introduced at different times these elements could aid or arrest the population growth. Over a course of 10million years the human population the human population seemed almost unpredictable. Now around the 1800’s humans began to get a grasp on the advancement of public health and advanced