Growth of Bacteria The growth rate of Escherichia coll, a common bacterium found in the human intestine, is proportional to its size. Under ideal laboratory conditions, when this bacterium is grown in a nutrient broth medium, the number of cells in a culture doubles approximately every 20 min. (a) If the initial population is 200, determine the function Q(t) that expresses the growth of the number of cells of this bacterium as a function of time t (in minutes). Q(t) = (b) How long would it take for a colony of 200 cells to increase to a population of 1 million? (Round your answer to the nearest whole number) min (c) If the initial cell population were 2000, what is our model? Q(t) =

Growth rate, A 20-year-old university student weighs 65 kg and had a birth weight of 3 kg. Prove that at some point in her life she was growing at a rate of 3.1 kg. per year.

Growth of Bacteria The growth rate of Escherichia coli, a common bacterium found in the human intestine, is proportional to its size. Under ideal laboratory conditions, when this bacterium is grown in a nutrient broth medium, the number of cells in a culture doubles approximately every 20 min.