A. Explain the term "concentration gradient". Make sure to discuss the difference between a solution's concentration and a concentration gradient.
B. An artificial cell contains 0.03M sucrose and 0.02 M glucose. It is placed into a solution containing 0.01M concentrations each of sucrose, glucose and fructose. The 'cell' membrane is permeable to glucose and fructose, but not sucrose.
1. For which solutes to concentration gradients exist and why?
2. Which solutes will exhibit net diffusion into the cell?
3. Which solutes will exhibit net diffusion out of the cell?