the nerve cell that extends from the big toe to the base of the spine can be one meter long. a typical bacterial cell is one micrometer long. therefore, the nerve cell is longer than the bacterial cell.

From a high concentration to a low concentration.

The rate that would change would be the  searching efficiency/attack rate. there are only two other rates in this model: the  growth rate of prey, and the  predator or consumer mortality rate.the  searching efficiency/attack rate is what indicates how effectively can a predator capture its prey whether in the searching process or actual capturing/attacking process.