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NEET-UG Biology

Antibodies, vaccination and immunisation — practice questions

3 questions in the bank on this idea. Below are 3 of them, exactly as they appear in a test.

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  1. Question 1 · difficulty L1 · recall

    What is the main purpose of vaccination?

    • A. To prevent antibody formation
    • B. To kill every pathogen already present
    • C. To replace all innate defences
    • D. To build immune memory

  2. Question 2 · difficulty L2 · understanding

    Which type of immunity results when a person receives ready-made antibodies?

    • A. Passive immunity
    • B. Active immunity
    • C. Innate immunity only
    • D. Cell-mediated immunity only

  3. Question 3 · difficulty L4 · analysis

    A vaccinated person encounters the same pathogen years later and produces antibodies rapidly. What best explains the faster response?

    • A. The pathogen has lost all antigens
    • B. Memory cells from the primary response
    • C. Innate barriers have become antigen-specific
    • D. Antibodies are permanently stored at high levels

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