Question

osmosis practice
a. hypotonic
b. solute
c. hypertonic
d. osmosis
e. solvent
f. isotonic

1. a substance, such as salt, that is dissolved in a solution.
2. a substance, such as water, that is dissolving another substance in a solution.
3. the diffusion of water across a semipermeable membrane.
4. a solution in which the concentration of solute outside of the cell is lower than that inside the cell.
5. a solution in which the concentration of solute outside the cell is equal to that inside the cell.
6. a solution in which the concentration of solute outside the cell is higher than that inside the cell.

each of the beakers below contains different concentrations of saline (salt) solution with a cell inside. compare the concentrations outside and inside the cell to determine what type of solution the cell is in. then draw the direction that water would move (into or out of the cell)
7.
8.

Explanation:

1. A substance like salt dissolved in a solution is a solute (B).
2. A substance like water that dissolves another substance is a solvent (E).
3. The diffusion of water across a semi - permeable membrane is osmosis (D).
4. A solution with lower solute concentration outside the cell than inside is hypotonic (A).
5. A solution with equal solute concentration outside and inside the cell is isotonic (F).
6. A solution with higher solute concentration outside the cell than inside is hypertonic (C).

For beaker 7: The solute concentration outside (3%) is higher than inside (0.9%), so it's a hypertonic solution and water will move out of the cell.
For beaker 8: The solute concentration outside (0.2%) is lower than inside (0.9%), so it's a hypotonic solution and water will move into the cell.

Answer:

1. B. solute
2. E. solvent
3. D. osmosis
4. A. hypotonic
5. F. isotonic
6. C. hypertonic
7. Hypertonic, water moves out of the cell
8. Hypotonic, water moves into the cell