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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 0.2 M FRUCTOSE and 0.8 M glucose, AND 2M SUCROSE. It is placed into a solution containing 0.5 M fructose, 0.5 M glucose, and 1 M sucrose. 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?

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