Question

Which among the following structures has a 9 + 2 arrangement?

• A. Flagella
• B. Ribosome
• C. Mitochondria
• D. Golgi apparatus

Answer 1

The correct option is A Flagella

• A eukaryotic flagellum is a bundle of nine fused pairs of microtubule doublets surrounding two central single microtubules. The so-called "9+2" structure is characteristic of the core of the eukaryotic flagellum called an axoneme.
• At the base of a eukaryotic flagellum is a basal body. Basal bodies are structurally identical to centrioles.
• The flagellum is encased within the cell's plasma membrane so that the interior of the flagellum is accessible to the cell's cytoplasm.
• So, the correct answer is 'Flagella'.