This is a working model, not a picture. Set the organism, the temperature, the pH, the air and the food. The model works out how fast each cell divides, then grows the whole flask for you. Press Play and watch the count rise, level off and fall.
A sealed flask over time log scale
The up axis counts living cells in one milliliter. Each step up is ten times more cells. Steady doubling draws a straight climb on this kind of axis. Tap a shaded band to read that phase.