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Problem 6 - Olympiad

Cilia and flagella of eukaryotic cells differ from bacterial flagella in that:

A. They are composed of flagellin proteinB. They use ATP for movementC. They have a 9+2 microtubule structureD. They are longer

Correct: C

Eukaryotic cilia and flagella have a 9+2 arrangement of microtubules and use ATP powered by dynein motors. Bacterial flagella are single filament proteins without microtubules and have a different rotation mechanism.