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Questions and Answers
What powers the rotation of bacterial flagella?
What powers the rotation of bacterial flagella?
- Glycolysis
- Proton motive force (correct)
- ATP hydrolysis
- Oxidative phosphorylation
What is the function of flagellar rotation in bacteria?
What is the function of flagellar rotation in bacteria?
- Propelling the bacteria through liquid environments (correct)
- Facilitating the exchange of genetic material
- Aiding in the formation of biofilms
- Assisting in the process of binary fission
What is the arrangement of bacterial flagella?
What is the arrangement of bacterial flagella?
- Central flagellation
- Radial flagellation
- Peripheral flagellation
- Polar flagellation (correct)
What is the structure of bacterial flagella?
What is the structure of bacterial flagella?
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Where are bacterial flagella located?
Where are bacterial flagella located?
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How are bacterial flagella arranged?
How are bacterial flagella arranged?
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Study Notes
Bacterial Flagella
- Rotation Power Source: The rotation of bacterial flagella is powered by the proton motive force (PMF), a gradient of protons across the membrane.
- Function of Rotation: Flagellar rotation enables bacteria to move towards or away from stimuli, a process known as chemotaxis, allowing them to respond to their environment.
Flagella Structure and Arrangement
- Arrangement: Bacterial flagella are typically arranged in a polar or peritrichous manner, with flagella located at the poles or scattered all over the cell surface.
- Structure: A flagellum consists of three main parts: the filament, hook, and basal body, with the filament being the long, helical structure responsible for propulsion.
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