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NEET-UG Biology

Cytoskeleton, cilia, flagella and centrosome — practice questions

5 questions in the bank on this idea. Below are 5 of them, exactly as they appear in a test.

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  1. Question 1 · difficulty L1 · recall

    What is the typical microtubule arrangement in the axoneme of eukaryotic cilia and flagella?

    • A. 9 + 2
    • B. 9 + 0
    • C. 8 + 2
    • D. 13 + 0

  2. Question 2 · difficulty L2 · understanding

    What is a major role of the cytoskeleton in eukaryotic cells?

    • A. Maintaining cell shape and supporting intracellular movement
    • B. Storing genetic information
    • C. Digesting macromolecules
    • D. Synthesising ATP directly

  3. Question 3 · difficulty L3 · application

    A cell loses functional microtubules. Which process would be most directly disrupted?

    • A. Movement of chromosomes during cell division
    • B. DNA base pairing
    • C. Peptide bond formation at ribosomes
    • D. Diffusion of oxygen across the membrane

  4. Question 4 · difficulty L3 · application

    A respiratory epithelial cell has many short surface projections that beat in a coordinated manner to move mucus. What are these projections?

    • A. Cilia
    • B. Flagella
    • C. Microvilli
    • D. Pseudopodia

  5. Question 5 · difficulty L4 · analysis

    Structure X has nine peripheral microtubule triplets and no central pair, while structure Y has nine peripheral doublets surrounding two central microtubules. Which pairing is correct?

    • A. X centriole, Y cilium or flagellum
    • B. X cilium, Y centriole
    • C. Both are centrioles
    • D. Both are cilia

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