Scelta multipla
Microtubules are arranged in which of the following arrays?
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15. Cytoskeleton and Cell Movement
Cilia and Flagella
Scelta multipla
In many motile bacteria, which cell structure primarily provides propulsion for movement through liquid environments?
A
Flagellum
B
Pilus (fimbria)
C
Capsule (glycocalyx)
D
Cilium
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Understand that motile bacteria move through liquid environments by generating propulsion.
Recall the main cell structures involved in bacterial movement: flagella, pili (fimbriae), capsules, and cilia.
Recognize that pili (fimbriae) are primarily used for attachment to surfaces, not for propulsion.
Know that capsules (glycocalyx) serve as protective layers and help in adhesion but do not provide movement.
Identify that flagella are long, whip-like structures that rotate to propel bacteria through liquids, making them the primary structure for bacterial motility.
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