Suppose you are given 20.0mL of a suspension of bacteria which is having 5 x 10^7 organisms/mL. Calculate and diagram a scheme to dilute this to 1 x 10^2 organisms/mL in a final volume of 1.0mL in the last tube. The smallest volume of bacterial culture you can reliably measure is 1mL. Provide the final dilution factor and the dilution at each step.