Biology  by Bradford
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B3.2 Transport: grass skirts

20 quick questions on transport, 13 of them at standard level, 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. Narrow vessel with a wall one cell thick
  2. Thick-walled vessel leaving the heart
  3. Valved vessel taking blood to the heart
  4. Space inside a vessel where blood flows
  5. Pressure wave felt at the wrist or neck
  6. Dead, hollow tube carrying water
  7. Strand of xylem and phloem in a stem
  8. Pore in a capillary wall for fast exchange
  9. Stretch and recoil to keep pressure up
  10. Fatty plaques narrowing an artery
  11. Value from −1 to +1 showing link strength
  12. Polymer stiffening walls against tension
  13. Negative pressure drawing water up xylem
  14. Plasma forced out of capillaries
  15. Thin, leaky tube returning excess fluid
  16. Blood passes the heart twice per loop
  17. Right-atrium cells that start each beat
  18. Flap between upper and lower chambers
  19. Mitochondria-rich cell that loads sap
  20. Push upward from active mineral uptake

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