Biology  by Bradford
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Osmoregulation and compartments: grass skirts

19 quick questions on AP Biology topics 2.7 Tonicity and Osmoregulation, 2.8 Mechanisms of Transport, 2.9 Cell Compartmentalization and 2.10 Origins of Cell Compartmentalization, 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. Diffusion of water across a membrane
  2. Having more solute than the cell
  3. Having less solute than the cell
  4. Same solute level as the cell
  5. Engulfed prokaryotes became organelles
  6. Cell lacking a nucleus, like a bacterium
  7. Cell with a nucleus and organelles
  8. Ψ, the sum of pressure and solute terms
  9. Membrane pulling away from the wall
  10. Push of a full vacuole against the wall
  11. Bails water out of a freshwater protist
  12. Keeping body water and solute balance
  13. Moves 3 Na⁺ out and 2 K⁺ in using ATP
  14. Voltage of about −70 mV across a cell
  15. Keeping reactions apart behind membranes
  16. ER, Golgi, vesicles and lysosomes as one
  17. Equals −iCRT, zero or negative
  18. One solute rides another's gradient in
  19. Charge plus concentration difference

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