This simulation is about exponential growth of bacteria. The first context features a nice animation (set of bitmaps), which shows the process of cel-division and plots the number of bacteria in a diagram. The second and final context is about reproduction of bacteria and decomposition of nutrients. Kilograms of stock, inflow and resulting biomass are plotted versus time in a diagram. Only few questions are included, one in the first and four in the second context. You can click on the screencaps below for a larger display.