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Adaptive immunity Knowledge-Based Practice

Biology · Human Body & Physiology · Biology · Immune System

5 Biology practice questions on Adaptive immunity. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    Which of the following processes characterizes artificially acquired active immunity?

    • A) Administration of an antigen that stimulates the host's own lymphocytes to generate antibodies and memory cells
    • B) Direct infusion of preformed exogenous antibodies that confer immediate but temporary protection without memory formation
    • C) Natural transfer of maternal immunoglobulins across the placenta to provide transient systemic defense
    • D) Non-specific engulfment of pathogens by circulating phagocytes without prior antigen recognition
  2. 2.

    Which subset of T lymphocytes recognizes antigenic peptides presented on MHC class II molecules and secretes cytokines essential for activating both B lymphocytes and cytotoxic T lymphocytes?

    • A) Cytotoxic T lymphocytes
    • B) Plasma cells
    • C) Helper T lymphocytes
    • D) Natural killer cells
  3. 3.

    During a humoral adaptive immune response, which specialized effector cells are directly responsible for synthesizing and secreting massive quantities of soluble antibodies?

    • A) Helper T lymphocytes
    • B) Cytotoxic T lymphocytes
    • C) Plasma cells
    • D) Natural killer cells
  4. 4.

    During a cell-mediated adaptive immune response, which cell type directly induces apoptosis in host cells displaying foreign viral antigens bound to MHC class I molecules?

    • A) Helper T lymphocytes
    • B) Cytotoxic T lymphocytes
    • C) B lymphocytes
    • D) Mature plasma cells
  5. 5.

    Which of the following features uniquely characterizes adaptive immunity rather than innate immunity?

    • A) High antigen specificity and the development of long-lasting immunological memory
    • B) Immediate activation without requiring prior sensitization or clonal expansion
    • C) Universal defense mediated by pre-existing anatomical barriers and antimicrobial enzymes
    • D) Reliance on germline-encoded pattern recognition receptors that target broad microbial structures

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