30 scenario-based questions in which students classify membranes, barriers, and materials as Permeable (allowing substances to pass through) or Impermeable (preventing the passage of substances). For AP Biology, chemistry, and environmental science courses. Use as a bell ringer, exit ticket, unit review, sub plan, homework, or test prep activity for the the cell membrane and transport unit. No more printing or correcting, in an LMS it corrects itself! No more passing out the papers, or colle