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1. Mastering Microbiology ch. 4 Flashcards | Quizlet
quizlet.com
Link: https://quizlet.com/121629208/mastering-microbiology-ch-4-flash-cards/
Description: WEBTumbles occur when a. the flagella rotate counterclockwise. b. the flagella stop rotating. c. the flagella undulate. d. the flagella rotate clockwise.
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2. How bacteria swim – Atlas of Science
atlasofscience.org
Link: https://atlasofscience.org/how-bacteria-swim/
Description: WEBApr 6, 2017 · The smooth segments of travel are called runs, and the periods during which the cells change direction are called tumbles. Runs occur when all of the several flagella on a cell (typically four) turn counter-clockwise (viewed from the outside of the cell), and tumbles occur when one or more of the flagella switch to clockwise, which leads to ...
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3. Visualizing Flagella while Tracking Bacteria - PMC
nih.gov
Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4982932/
Description: WEBAug 8, 2016 · Tumbles occur when the sense of rotation switches from CCW to clockwise (CW), but not all of the flagellar motors on a cell need to change direction at once: the reversal of one is sufficient to cause a cell to change course (3, 4). The filament changes from normal to semicoiled (right-handed with half the pitch) and comes out of the bundle.
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4. More than propellers: how flagella shape bacterial motility behaviors
sciencedirect.com
Link: https://www.sciencedirect.com/science/article/pii/S136952742100028X
Description: WEBJun 1, 2021 · Pioneering work on the peritrichously flagellated Escherichia coli revealed that its trajectories consist of near-straight segments called runs and brief turning events called tumbles [5]. Runs are driven by all flagella rotating counterclockwise (CCW) in a bundle, and tumbles occur when one or more flagella transiently rotate clockwise (CW).
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5. 2.5B: Flagella - Biology LibreTexts
libretexts.org
Link: https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(Kaiser)/Unit_1%3A_Introduction_to_Microbiology_and_Prokaryotic_Cell_Anatomy/2%3A_The_Prokaryotic_Cell_-_Bacteria/2.5%3A_Structures_Outside_the_Cell_Wall/2.5B%3A_Flagella
Description: WEBAug 31, 2023 · This occurs when some of the the flagella rotate clockwise, disengage from the bundle, and trigger a tumbling motion. Clockwise rotation causes the flagellum to assume a right-handed helix. A tumble only lasts about one-tenth of a second and no real forward progress is made.
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6. Visualizing Flagella while Tracking Bacteria - Cell Press
cell.com
Link: https://www.cell.com/biophysj/pdfExtended/S0006-3495(16)30478-7
Description: WEBTumbles occur when the sense of rotation switches from CCW to clockwise (CW), but not all of the flagellar motors on a cell need to change direction at once: the reversal of one is sufficient to cause a cell to change course. Submitted April 12, 2016, and accepted for publication May 26, 2016.
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7. Real-Time Imaging of Fluorescent Flagellar Filaments - PMC
nih.gov
Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC101988/
Description: WEBJan 10, 2000 · We found that cells can alter course (tumble, as defined by tracking experiments ) by changing the direction of rotation of as few as one flagellar filament. Alterations in course tend to occur during transformations to the semicoiled form, before a new bundle is consolidated.
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8. Fundamental Constraints on the Abundances of Chemotaxis …
nih.gov
Link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4375530/
Description: WEBMar 3, 2015 · Runs occur when flagella rotate counterclockwise and bundle together, whereas tumbles occur when one or more rotate clockwise and disrupt the bundle . In E. coli, transmembrane chemoreceptors form large and highly ordered arrays at …
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9. High-throughput 3D tracking of bacteria on a standard phase
nature.com
Link: https://www.nature.com/articles/ncomms9776
Description: WEBNov 2, 2015 · While during runs, all flagella rotate counterclockwise and form a bundle that pushes the cell forward, a tumble occurs when one or more flagella reverse direction and leave the bundle 30.
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10. 7.21A: Chemotaxis - Biology LibreTexts
libretexts.org
Link: https://bio.libretexts.org/Bookshelves/Microbiology/Microbiology_(Boundless)/07%3A_Microbial_Genetics/7.21%3A_Sensing_and_Signal_Transduction/7.21A%3A__Chemotaxis
Description: WEBThe overall movement of a bacterium is the result of alternating tumble and swim phases. Key Terms chemotaxis : Chemotaxis is the phenomenon whereby somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements in response to certain chemicals in their environment.
