"In this paper, the movement of bacteria, i.e. E. coli, is
simulated based on the run and tumble model. The random walk
parameters, such as the speed, tumbling frequency, run duration,
and the turn angle between two successive runs were taken from
experimental measurements; and use them to simulate the bacteria
movement in cases of three different uniform chemical
concentration distributions. The motility coefficient is computed to
characterize the migration responses. Furthermore, a case of
chemical attractant gradient distribution in the environment is
designed to validate the run and tumble model. It is found that
bacteria move with higher motility coefficient in higher chemical
concentrations. Simulation results suggested that bacterial run and
tumble model can be used to describe real bacteria movement. "
