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Video
Berg begins his lecture with a brief history of observations of bacterial motion. He then uses physics to describe the many hurdles that E. coli must overcome as it tries to swim up or down a chemical gradient. For instance, an entity as tiny as E. coli is constantly buffeted by Brownian motion and can neither stay still nor swim in a straight line. Then there is the question of how E. coli senses a gradient and translates that information into a change in its direction of movement. And finally, how does E. coli use its flagella to generate thrust at all? In Part 2, Berg explains that E. coli travels using a series of runs, when it moves in a straight line, and tumbles, when it changes direction. During a run, all of the flagella are moving counterclockwise in a tight bundle. During a tumble, one or more flagella switch to a clockwise movement and disengage from the bundle causing a change in the swimming direction. The motor that drives the rotation of the flagella is an amazing structure made of about 20 different protein parts. Berg tells us that chemosensory receptors on the cell surface detect a chemical gradient and transfer this information, via protein phosphorylation, to the motor. This chemical modification determines the direction of motor rotation and, hence, the direction the E. coli swims. An amazing system that E. coli has been perfecting for millions of years!
- Subjects:
- Physics and Biology
- Keywords:
- Bacteria -- Motility Physics Escherichia coli
- Resource Type:
- Video
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e-journal
In this journal platform, you can find the articles which published under the Creative Commons Attribution-NonCommercial 4.0 International License. The journal covers a various disciplines, including:
Biomedical & Life Sciences
Business & Management
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Computer & Communications
Earth & Environmental Science
Engineering
Humanities
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Social Sciences
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- Management, Physics, Chemistry, Computing, Mathematics and Statistics, Biology, and Environmental Sciences
- Keywords:
- Industrial management Computer science Management Physics Mathematics Social Sciences Chemistry Engineering Environmental sciences Humanities Biology
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- e-journal
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e-journal
In this journal platform, you can find the articles which published under the open license. The journal including the disciplines:
Biomedical & Life Science
Business & Economics
Chemistry & Materials Science
Computer Science & Communication
Earth & Environmental Science
Engineering
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Physics & Mathematics
Social Science & Humanities
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- Health Sciences, Environmental Sciences, Physics, Economics, Chemistry, Computing, Mathematics and Statistics, and Biology
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- Science Periodicals Industrial management Computer science Physics Mathematics Life sciences Economics Technology Chemistry Social sciences Environmental sciences Engineering Materials science Medicine
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e-journal
In this journal platform, you can find the articles which published under the open license. The journal including the disciplines:
Biological Sciences
Medicine
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Mathematics, Engineering, and Computer Science
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- Medicine, Chemistry, Computing, Mathematics and Statistics, Biology, and Physics
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- Science Periodicals Computer science Physics Mathematics Education Technology Social sciences Environmental sciences Engineering Biology Medicine Physical sciences
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- e-journal
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e-journal
Estonian Academy Publishers issues seven open access scientific journals, peer-reviewed, indexed and abstracted in international review publications and databases. All journals have an international Editorial board. Publications of the Estonian Academy Publishers cover almost all important areas of contemporary science. Our journals are peer reviewed and recognized by the Estonian Research Council and the Estonian Committee of Science Compentence as journals meeting international scientific standards.
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- Environmental Sciences, Physics, Chemistry, Archeology, Mathematics and Statistics, Biology, and Foreign Language Learning
- Keywords:
- Science Periodicals Uralic languages Ecology Mathematics Archaeology Technology Chemistry Social sciences Europe -- Baltic Sea Region Engineering Humanities Geology History Physics
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- e-journal
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e-journal
Edorium journals is one of the leading academic publishers of open access journals. It publishes peer reviewed journals and international journals in fields including basic sciences, medical specialties and surgical specialties. You can refer the open access journals list on Edorium Journals to know the sub-specialties under which scholarly articles can be published here. It covers a variety of disciplines including medicine, science, humanities, technology, chemistry, arts, biology, engineering, management, physics, cancer research, neuroscience, genetics, immunology and infection, environment, developmental biology, bioengineering, clinical skills, biochemistry, behavior, psychology, and many more.
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- Environmental Sciences, Physics, Chemistry, Psychology, Biology, and Medicine
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- Science Periodicals Arts Physics Technology Chemistry Social sciences Environmental sciences Engineering Humanities Biology Medicine
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e-journal
In this journal platform, you can find the articles which published under the Creative Commons Attribution 3.0 Unported (CC-BY) license. They may be downloaded, printed, distributed, or posted online as long as they are properly attributed. The journal including:
Computer Reviews Journal
Journal of Drug and Alcohol Research
Journal of Evolutionary Medicine Journal of Orthopaedics and Trauma
MathLAB Journal Socialsci Journal
To Chemistry Journal
To Physics Journal
Mintage Journal of Pharmaceutical and Medical Sciences
Journal of Foreign Language Education and Technology
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- Medicine, Chemistry, Computing, Biology, Foreign Language Learning, and Physics
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- Science Periodicals Computer science Language languages--Computer-assisted instruction Medicine Technology Chemistry Social sciences Physics
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e-book
Body Physics sticks to the basic functioning of the human body, from motion to metabolism, as a common theme through which fundamental physics topics are introduced. Related practice, reinforcement and Lab activities are included. See the front matter for more details. Additional supplementary material, activities, and information can be found at: https://openoregon.pressbooks.pub/bpsupmat/