Inter-turn intervals in Paramecium caudatum display an exponential distribution

Inter-turn intervals in Paramecium caudatum display an exponential distribution

Blog Article

In navigating to a better location, mobile organisms in diverse taxa change directions of travel occasionally, including bacteria, archaea, single-celled eukaryotes, and small nematode worms such as Caenorhabditis elegans.In perhaps the most common form of goal-orientated movement, the rate of such turns is adjusted in all these taxa to ORGANIC CONCORD GRAPE ascend (or descend) a chemical gradient.Basically, the rate of turns is reduced when the movement results in better conditions.In the bacterium Escherichia coli and in C.elegans, the turns are generated by random-rate processes, in which the probability of a turn occurring is constant at every moment.

This is evidenced by a distribution of inter-turn intervals that has an exponential distribution.For the first time, we examined the distribution of inter-turn intervals in the single-celled eukaryote, Paramecium caudatum, in a class exercise for first-year university students.We found clear evidence for an exponential distribution of inter-turn intervals, implying a random-rate process in generating turns in Paramecium.The exercise also shows that university laboratory classes can be used to generate scientific Soccer - Field Equipment - Accessories data to address research questions whose answers are as yet unknown.