1. A researcher has observed that the concentration of solutes is different in the intracellular and extracellular regions of a particular type of tissue. Pose a scientific question that would guide your investigation to explain this observation. The researcher has discovered that the membrane contains embedded proteins along with the phospholipid bilayer. How does this new information revise your initial question?
2. Assume that the concentration of the solute molecules varies over time on both sides of the membrane and that the solute molecules continue to pass through the membrane even when the concentration gradient is the reverse of the gradient shown. Describe the environment in and around the cell, as shown in the diagram, and the mechanism of transport of the solute molecules.