1Card 1ReadyFrontThe cue or questionWhat is the main function of the phospholipid bilayer?BackThe answer to recallIt creates a selectively permeable boundary between the cell and its environment.
2Card 2ReadyFrontThe cue or questionHow does active transport differ from facilitated diffusion?BackThe answer to recallActive transport uses cellular energy to move substances against their concentration gradient.
3Card 3ReadyFrontThe cue or questionWhat drives osmosis across a membrane?BackThe answer to recallA difference in water concentration caused by unequal solute concentrations.