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Multiple Choice
Which of the following terms are better applied to eukaryotic flagella than to bacterial flagella?
A
Rotary motion
B
Basal body
C
9+2 microtubule arrangement
D
ATP-driven movement
Verified step by step guidance
1
Understand the structural differences between eukaryotic and bacterial flagella. Eukaryotic flagella are complex structures made of microtubules, while bacterial flagella are simpler and made of the protein flagellin.
Recognize that eukaryotic flagella have a characteristic '9+2' microtubule arrangement. This means there are nine pairs of microtubules arranged in a circle around two central microtubules.
Identify that eukaryotic flagella move through ATP-driven movement. The energy from ATP is used to power the dynein motor proteins that cause the microtubules to slide against each other, resulting in a whip-like motion.
Contrast this with bacterial flagella, which move through rotary motion powered by a proton motive force across the cell membrane, not ATP.
Conclude that the terms '9+2 microtubule arrangement' and 'ATP-driven movement' are more applicable to eukaryotic flagella than bacterial flagella, due to their structural and functional characteristics.