Biology by Bradford
B2.1 Membranes and membrane transport: grass skirts
18 quick questions on membranes and membrane transport, 12 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
- SnipA runner cuts one strip off the bottom of their team’s sheet.
- Answer as a pairBack at the table, they write the answer on the strip. No books.
- Get it checkedThe checker reads it against the key: you, or a student holding it.
- 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.- Two-layer sheet of amphipathic molecules
- How O₂ and CO₂ pass between phospholipids
- Net water movement towards more solute
- Passive ion movement through channels
- Movement against a gradient using ATP
- Polypeptide embedded in one or both layers
- Polypeptide on one face of the bilayer
- Steroid in the bilayer of animal cells
- Membrane picture: proteins in a lipid sea
- Lets some particles through but not others
- Membrane pore specific for water
- Sugar-bearing bilayer molecule, no protein
- Bulk intake by infolding of the membrane
- Release of vesicle contents at the surface
- ATP-driven exchanger of Na⁺ and K⁺
- Protein binding cells together in tissues
- Uses the Na⁺ gradient to bring glucose in
- Ion pore opened by a change in potential