Answer: Problem 4: Hypertonic Problem 5: Hypotonic
Explanation:
Let's start with some background.
A hypertonic solution has more solute in the solution than the cell, so water will leave the cell.
A hypotonic solution has less solute in the solution than the cell, so water will flow into the cell.
This is osmosis or the net movement of water from a less concentrated to a more concentrated area.
For problem 4, there is less solute in the cell than in the solution, so it is hypertonic. For problem 5, there is more solute in the cell than in the solution, so it is hypotonic. If you want to be more specific, the hypertonic cell will shrink because water leaves the cell to diffuse the solute in the solution and the hypotonic cell will expand because water enters the cell to diffuse the solute in the cell.