Mastering Tonicity in Cellular Transport Quiz

1. What is a solution that has the same osmotic concentration as a cell's cytoplasm?

Hyperosmotic solution

Hypertonic solution

Hypotonic solution

Isotonic solution

An isotonic solution has the same osmotic concentration as a cell's cytoplasm, leading to no net movement of water across the cell membrane. Hypertonic solutions have a higher solute concentration than the cell, causing water to move out of the cell. Hypotonic solutions have a lower solute concentration than the cell, leading to water moving into the cell. Hyperosmotic solutions have a higher osmotic pressure than the cell's cytoplasm.

Explanation

An isotonic solution has the same osmotic concentration as a cell's cytoplasm, leading to no net movement of water across the cell membrane. Hypertonic solutions have a higher solute concentration than the cell, causing water to move out of the cell. Hypotonic solutions have a lower solute concentration than the cell, leading to water moving into the cell. Hyperosmotic solutions have a higher osmotic pressure than the cell's cytoplasm.

2. What type of solution causes a cell to shrivel?

Hypotonic solution

Neutral solution

Isotonic solution

Hypertonic solution

When a cell is placed in a hypertonic solution, it will lose water and shrink due to the higher concentration of solutes outside the cell compared to inside. In an isotonic solution, there is no net movement of water, while in a hypotonic solution, the cell will swell as water moves into it. A neutral solution does not have an effect on the cell's volume.

Explanation

When a cell is placed in a hypertonic solution, it will lose water and shrink due to the higher concentration of solutes outside the cell compared to inside. In an isotonic solution, there is no net movement of water, while in a hypotonic solution, the cell will swell as water moves into it. A neutral solution does not have an effect on the cell's volume.

3. Which type of solution causes a cell to swell?

Isotonic solution

Hypotonic solution

Hypertonic solution

A hypotonic solution has a lower solute concentration compared to the cell, causing water to move into the cell and swell. In contrast, a hypertonic solution has a higher solute concentration and causes the cell to shrink, while an isotonic solution has an equal solute concentration and does not change the cell size.

Explanation

A hypotonic solution has a lower solute concentration compared to the cell, causing water to move into the cell and swell. In contrast, a hypertonic solution has a higher solute concentration and causes the cell to shrink, while an isotonic solution has an equal solute concentration and does not change the cell size.

4. Which type of solution neither shrinks nor swells a cell?

Hypotonic solution

Hypertonic solution

Isotonic solution

Osmotic solution

An isotonic solution has the same concentration of solutes as the cell, causing no net movement of water. In a hypotonic solution, the cell swells due to water entering the cell to equalize the concentration. In a hypertonic solution, the cell shrinks as water leaves the cell to equalize the concentration. Osmotic solution is not a specific term used in biology for cell solutions.

Explanation

An isotonic solution has the same concentration of solutes as the cell, causing no net movement of water. In a hypotonic solution, the cell swells due to water entering the cell to equalize the concentration. In a hypertonic solution, the cell shrinks as water leaves the cell to equalize the concentration. Osmotic solution is not a specific term used in biology for cell solutions.

5. In which type of solution is there more water outside the cell than inside the cell?

Hypertonic solution

Hypotonic solution (water outside will all be absorbed into cell)

Isotonic solution

In a hypotonic solution, water concentration is higher outside the cell, causing water to move into the cell. This can result in cell swelling or even bursting due to osmotic pressure differences.

Explanation

In a hypotonic solution, water concentration is higher outside the cell, causing water to move into the cell. This can result in cell swelling or even bursting due to osmotic pressure differences.

6. What is a solution that causes water to move out of a cell?

Hypertonic solution

Osmosis solution

Isotonic solution

Hypotonic solution

A hypertonic solution contains a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell to balance the concentration levels.

Explanation

A hypertonic solution contains a higher concentration of solutes compared to the inside of the cell, causing water to move out of the cell to balance the concentration levels.