AP BIOLOGY

Detailed explanation-1: -This is because both the inside and outside of the cell are in the same concentration with respect to water and solutes Hence, there there will be no net movement of water.

Detailed explanation-2: -If the solute concentration outside the cell is the same as inside the cell, and the solutes cannot cross the membrane, then that solution is isotonic to the cell.

Detailed explanation-3: -The amount of water outside a cell compared to the inside creates an osmotic pressure gradient which causes water to move. In other words, if there are more solutes outside the cell than inside, water will move out of the cell to equalize the solute level inside.

Detailed explanation-4: -If a cell is placed in a hypotonic solution, water will move into the cell. This causes the cell to swell, and it may even burst. A hypertonic solution means the environment outside of the cell has more dissolved material than inside of the cell. If a cell is placed in a hypertonic solution, water will leave the cell.

Detailed explanation-5: -Water moves into and out of cells by osmosis. If a cell is in a hypertonic solution, the solution has a lower water concentration than the cell cytosol, and water moves out of the cell until both solutions are isotonic.