iBet uBet web content aggregator. Adding the entire web to your favor.
iBet uBet web content aggregator. Adding the entire web to your favor.



Link to original content: https://pubmed.ncbi.nlm.nih.gov/23653726
Chemotaxis on the move - active learning teaching tool - PubMed Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2010 Dec 20;11(2):177-8.
doi: 10.1128/jmbe.v11i2.216. Print 2010.

Chemotaxis on the move - active learning teaching tool

Ann H Williams  1
Affiliations

Chemotaxis on the move - active learning teaching tool

Ann H Williams. J Microbiol Biol Educ. .
No abstract available

PubMed Disclaimer

Figures

FIGURE 1
FIGURE 1
Demonstration of random walk. Each star is a student and each will perform a random walk. The random walk for only three students is shown (dark black stars). Each student performed four runs (arrows) and four tumbles (circles) with the black circle tumble being the end location of the student. Each tumble can result in movement in a new direction and all runs are five steps, regardless of direction the student is facing. For all three students, the end tumble (black circle) is still not past the three-quarter line towards the apple pie.
FIGURE 2
FIGURE 2
Demonstration of biased random walk. Each star is a student performing a biased random walk towards the apple pie. The biased random walk is shown for only three students (dark black stars). Each student performed four runs (arrows) and four tumbles, with the black circle tumble being the end location of the student. The student will always tumble after a run but if they are facing apple pie, they run for ten steps; if facing away from apple pie, run for two steps; or if facing in between, run for five steps. More of the students have migrated towards the apple pie in the biased random walk than in the random walk. This is evident by two of the three students (black circle end tumbles) reaching past the three-quarter line towards the apple pie.
See this image and copyright information in PMC

Similar articles

See all similar articles

References

    1. Adler J. Chemotaxis in bacteria. Science. 1966;153:708–716. doi: 10.1126/science.153.3737.708. - DOI - PubMed
    1. Berg HC, Brown DA. Chemotaxis in Escherichia coli analysed by three-dimensional tracking. Nature. 1972;239:500–504. doi: 10.1038/239500a0. - DOI - PubMed
    1. Macnab RM. Bacterial flagella rotating in bundles: a study in helical geometry. PNAS. 1977;74:221–225. doi: 10.1073/pnas.74.1.221. - DOI - PMC - PubMed
    1. Stewart RC, Dahlquist FW. Molecular components of bacterial chemotaxis. Chem Rev. 1987;87:997–1025. doi: 10.1021/cr00081a007. - DOI
    1. Stock JB, Surette MG. Chemotaxis. In: Ingraham JL, Neidhardt FC, editors. Escherichia coli and Salmonella typhimurium. American Society for Microbiology; Washington, DC: 1996. pp. 1103–1129.

LinkOut - more resources