Bacteria grow by binary fission and yeast grows by budding but the patterns of growth for a population are the same. There are many phases of microbial growth. These are lag phase which is when the microbe starts …show more content…
The amount of light that is scattered is equal to the number of cells. A colorimeter may also be used to determine the absorbance much easily and accurately. This would be at around 400nm – 600nm. A haemocytometer can also be used to count the number of microorganisms present in a culture. This is not the best method to use because it counts all the cells present however some of these cells may be dead thus providing inaccurate results. Viable counts can also be used to determine the amount of living cells in a culture. This method involves the spreading of a culture onto an agar plate. Once the bacterium sits on the nutrient medium it will divide by binary fission to leave 2, 4 and 8 etc until a colony of bacteria is observed. Each of these colonies will represent one