Scelta multipla
Which of the following bacterial structures is necessary for chemotaxis?
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7. Prokaryotic Cell Structures & Functions
Prokaryotic Flagellar Structure
Scelta multipla
A bacterial cell exhibiting chemotaxis must have which of the following structures?
A
Capsule
B
Flagella
C
Fimbriae
D
Pili
Guida verificata passo dopo passo1
Understand the concept of chemotaxis: Chemotaxis is the movement of an organism in response to a chemical stimulus, typically moving toward nutrients or away from harmful substances.
Identify the structures involved in bacterial motility: Among the options, flagella, fimbriae, pili, and capsule, only some are related to movement.
Recall the function of each structure: Flagella are whip-like appendages that enable bacterial movement; fimbriae and pili are primarily involved in attachment and conjugation; capsules protect the cell but do not aid in movement.
Connect chemotaxis to the structure responsible for movement: Since chemotaxis requires movement toward or away from chemicals, the structure enabling this motility is the flagella.
Conclude that a bacterial cell exhibiting chemotaxis must have flagella to move effectively in response to chemical signals.
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