Question

osmosis practice
directions: match the terms below with their correct definition
a. hypotonic c. hypertonic e. solvent
b. solute d. osmosis 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 solute is a substance dissolved in a solution, like salt. So the answer for 1 is B.
2. A solvent is a substance that dissolves another substance, like water. So the answer for 2 is E.
3. Osmosis is the diffusion of water across a semi - permeable membrane. So the answer for 3 is D.
4. A hypotonic solution has a lower solute concentration outside the cell compared to inside. So the answer for 4 is A.
5. An isotonic solution has equal solute concentration outside and inside the cell. So the answer for 5 is F.
6. A hypertonic solution has a higher solute concentration outside the cell compared to inside. So the answer for 6 is C.
7. In the first beaker, with 3% outside and 0.9% inside, it's hypertonic. Water moves out of the cell.
8. In the second beaker, with 0.2% outside and 0.9% inside, it's hypotonic. Water moves 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