Isotonic, Hypotonic and Hypertonic Solutions

Q.

Why doesn't a plant cell burst when placed in hypotonic condition?

1. The cell drains out of excess water

2. Cell wall is to withstand the osmotic turgor pressure of the cell

3. The cell wall does not allow water into the cell

4. The cell changes the salt concentration of the cytoplasm

Q.

If a red blood cell (interior concentration of 0.9% salt) was placed into a test tube of 10% salt, what would happen to the red blood cell?

1. It would fill with water and burst.

2. Nothing - the solution is isotonic to the interior of the red blood cell.

3. The red blood cell would shrink as it loses water to the salt solution in the test tube.

4. None of these