Biology  by Bradford
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C3.2 Defence against disease: grass skirts

19 quick questions on defence against disease, each answered in a word or two. Print a sheet for each team, a key for the checker and a tick sheet, then tape the sheets to the board and race.

How it runs

  1. SnipA runner cuts one strip off the bottom of their team’s sheet.
  2. Answer as a pairBack at the table, they write the answer on the strip. No books.
  3. Get it checkedThe checker reads it against the key: you, or a student holding it.
  4. Back for the nextA tick earns the next strip. Wrong? Back to the table to try again.

The questions on this sheet

The checker’s key, with every answer, prints with the sheets.
  1. Any agent that causes infectious disease
  2. Tough outer barrier of keratinised cells
  3. Sticky secretion that traps microbes
  4. Cell fragment that triggers clotting
  5. White blood cell that engulfs pathogens
  6. Y-shaped protein that binds one antigen
  7. Marker a lymphocyte recognises as foreign
  8. Destroys helper T cells, leading to AIDS
  9. Drug that kills bacteria but not viruses
  10. Infection passing from animals to humans
  11. Antigens given to build immunity safely
  12. Unvaccinated protected by many vaccinated
  13. Insoluble threads that trap blood cells
  14. Non-specific response present from birth
  15. Defences that learn each new pathogen
  16. Activates the matching B cells to divide
  17. Clone member that secretes antibodies
  18. Long-lived lymphocyte kept after infection
  19. Bacteria surviving a once-lethal drug

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