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Structure of Flagella

Flagella are long, whip-like structures that enable cell movement. In eukaryotes, they have a “9+2” microtubule core (axoneme) and are anchored by a basal body. Dynein proteins use ATP to create movement. Prokaryotic flagella are simpler, made of flagellin, and rotated by a motor protein. Both types help cells swim through liquids.