Assess undergraduate students' basic understanding of cell membrane structure and primary transport processes—diffusion, osmosis, facilitated diffusion, and active transport. Test definitions, driving forces and energy requirements, roles of the phospholipid bilayer and membrane proteins (channels, carriers, pumps), and the ability to predict net movement of solutes and water in simple hypertonic, hypotonic, and isotonic scenarios or membrane examples (e.g., Na+/K+ pump).